MID Customer Service Number — Professional Guide for Merchants

What a MID is and why the customer service number matters

A MID (Merchant Identification Number) is the unique numeric identifier an acquirer or payment processor assigns to your merchant account. Typical MIDs are between 8 and 15 digits (for example, 12345678 or 123456789012345) and are used on settlement reports, terminal receipts, and gateway dashboards to route funds, reconcile batches, and track liability. Confusing your MID with a Terminal ID (TID) or processor BIN is a common source of errors when contacting support; the MID identifies the legal account, whereas a TID identifies a single physical or virtual device.

Having the correct customer service number for your processor linked directly to your MID accelerates resolution of urgent items such as settlement holds, chargebacks, and account underwriting. In practice, merchants who call the correct support queue and provide a valid MID reduce case resolution time by weeks: internal industry benchmarks (acquirer best practices as of 2023) show direct MID-rooted investigations close 30–60% faster than general help-desk escalations.

Where to find your MID and the correct customer service number

Locate your MID on three reliable sources: (1) the top or footer of any settlement / merchant statement PDF (monthly or daily), (2) the printed receipt from the POS terminal (look for “MID” or “Merchant ID”), and (3) your payment gateway/acquirer dashboard under Account Settings → Account Information. For common providers, visit the official support pages: PayPal (https://www.paypal.com/smarthelp/contact-us), Stripe (https://support.stripe.com), and Square/Block (https://squareup.com/help). Your monthly deposit description (ACH credit from the acquirer) will often include the acquiring bank name and a remittance phone or support link.

Corporate headquarters and registered support centers can be useful when you need written escalation. Examples: PayPal Holdings, Inc., 2211 N. First St., San Jose, CA 95131; Stripe, Inc., 510 Townsend St., San Francisco, CA 94103; Block, Inc. (Square), 1455 Market St., San Francisco, CA 94103; Fiserv (acquirer formerly First Data), 255 Fiserv Dr., Brookfield, WI 53045. For precise phone numbers, always confirm the toll‑free or international support line on the provider’s contact page rather than relying on an old printed number—support routing changed dramatically after 2019 and again in 2021–2022 when many processors centralized phone support.

What to provide when you call and how the MID is used

When you call customer service, agents use the MID to pull a full audit trail: batch settlement history, deposit dates, chargebacks, retrieval requests, terminal logs, and underwriting setup. Providing the MID immediately moves your case into the merchant-account queue. If you cannot supply the MID, expect the agent to ask for alternate verification such as the legal business name, DBA, EIN/TIN, bank account last 4 digits, or recent deposit amounts.

Customer service will ask you to authorize access or provide documentation (voided check, Articles of Organization, government ID) if the request involves sensitive actions: changing banking details, lifting holds, or providing copies of dispute evidence. These steps are standard across processors to satisfy PCI and NACHA controls and to reduce fraud risk.

• Essential items to have when you call (prepare these before dialing): exact MID (example: 12-digit 123456789012), Terminal ID (8–12 digits), DBA + legal name, EIN or SSN last 4, last 3 deposit amounts and dates, a sample transaction ID (or last 4 of card), full receipts or invoices as PDF/JPEG, and any previously assigned case/ticket numbers.

Common problems, typical timelines and fee ranges

Typical issues routed via MID customer support include: chargebacks/disputes, retrieval requests, deposit delays, reserve/hold placement, and PCI compliance enforcement. Expect different resolution windows depending on issue severity: retrieval requests often resolve within 1–10 business days; standard chargeback investigations can take 7–45 days; risk holds or underwriting reviews may require 3–30 business days and sometimes up to 90 days when external bank compliance checks are involved.

Fee structures vary but common ranges are: chargeback fees $20–$125 per item, retrieval fees $5–$25, express deposit or same‑day funding fees 0.5%–2.5% of the batch (minimum $0.25–$2.50), and rolling reserves commonly 5%–20% of gross volume held for 90–365 days. Underwriting or remediation (e.g., PCI validation failure) can incur fixed fines or remediation costs that range from $100 to $50,000 depending on breach severity and card brand involvement; always escalate to merchant support for a line‑item explanation tied to your MID.

• Quick reference — typical timelines and fees: retrievals 1–10 days; disputes 7–45 days; reserves 3–12 months; chargeback fees $20–$125; same‑day funding 0.5%–2.5% fees. Confirm exact amounts on your merchant agreement tied to your MID.

Phone script and email template to contact MID support

Phone script (concise, professional): “Hello, my name is [Full Name], I am calling about Merchant ID [insert MID]. My DBA is [DBA] and legal entity is [Legal Name]. I have a settlement discrepancy dated [MM/DD/YYYY], batch ID [xxxxxx], and I can provide the transaction ID and receipt. Please open a case and provide the ticket number and expected SLA.” Ask for the escalation path (supervisor case ID) and email confirmation to create an audit trail.

Email/template for the support portal: Subject line: “MID [123456789012] — Dispute/Deposit Issue — [DBA]” Body: include legal name, EIN last 4, three recent deposit amounts/dates, transaction IDs, scanned receipts, merchant agreement copy (if requested), and desired resolution (refund, reversal, document retrieval). Close with contact number and preferred callback window. Attach PDFs (statements and receipts) and request a ticket number and SLA (e.g., response within 48 hours, investigation complete within 14 business days).

Where can I pay my mid bill?

Payment Kiosks

• MID Office. 1231 11th Street. Modesto, CA 95354. (Monday through Friday, 8 a.m. to 5 p.m.)
• O’Brien’s Market. 839 W Roseburg Avenue. Modesto, CA 95350. (209) 575-1389.
• Super Mercado Del Sol. 950 Kansas Avenue. Modesto, CA 95351. (209) 524-9234.
• O’Brien’s Market. 4120 Dale Road. Modesto, CA 95356. (209) 545-8100.

What is the phone number for Midwest Energy customer service?

Applications can also be returned via email to this email address. To donate to the Midwest Customers Care program, call us at 1-800-222-3121 or log into your online account. After logging in, click on the three lines in the top left corner and find “Customers Care,” fill out the form and click “Submit.”

What is the emergency number for Midamerican energy?

To report a gas emergency, call 800-595-5325. To report an electric emergency, call 800-799-4443. For electric power outages, report it here.

What is the phone number for MEC call center?

Contact MEC’s Service Centre at 1 (888) 847-0770 | MEC.

What does mid cover in Modesto?

The Modesto Irrigation District (MID), located in California’s Central Valley, provides electric and irrigation and treats surface water for drinking. MID is an independent, publicly-owned utility and is committed to providing reliable service at the lowest cost possible.

What is the 24 hour customer service number for NV Energy?

Report an Issue or Damage

Northern Nevada	Southern Nevada
(775) 834-4444 (more customer service numbers)	(702) 402-5555 (more customer service numbers)