Tamilnad Mercantile Bank Customer Care & Net Banking Helpline
tmb.bank.in
Last verified Oct 2026 · numbers can change, confirm on the official site.
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About Tamilnad Mercantile Bank
TMB splits its desks by the kind of trouble. General account and card questions go to the All India toll-free line 1800 425 0426 or the mobile line +91 9842 461 461, with [email protected] in writing.
Net banking and MBank problems have their own Thoothukudi desk on 0461 2383325, 2383326 and 2383327, a lost card is blocked on 044 26223106, and fraud or phishing goes to 044 69297034.
Tamilnad Mercantile Bank also publishes the numbers it rings customers from, one for verification calls and two for its authorised call centres, so a caller can be checked against that list before you say anything. Keep your account number to hand, and remember the bank asks for no OTP, PIN or card number on a call.
Tamilnad Mercantile Bank helpline — questions
1800 425 0426, toll-free across India, and +91 9842 461 461 as the mobile line. Both cover accounts, cards and general service questions, and [email protected] takes the same in writing.
1800 425 0426 toll-free number, illana +91 9842 461 461. Net banking, MBank app, card, account ellathukkum idhe number. Email venumna [email protected] ku anuppunga.
The 1800 line is. 1800 425 0426 costs you nothing from anywhere in India, while +91 9842 461 461 is an ordinary mobile number that your operator charges for. Both land at the same customer care desk.
Not general customer care. TMB runs a separate internet and mobile banking desk on 0461 2383325, 2383326 and 2383327 for login errors, password resets and failed transactions, and it takes the same by email at [email protected] or [email protected].
Ring 044 26223106 or 044 26223109 straight away and ask for the block. A credit card question that is not a blocking emergency goes to 0461 2383346 or [email protected].
Call 044 69297034 or write to [email protected] with what happened. The bank publishes the numbers it calls from, so you can check a caller: verification comes only from 044 69297000 and its authorised call centres from 1600318505 and 1600303426.
Start with your branch manager or the online complaint form on the bank's site, which also tracks what you have already filed. Customer care on 1800 425 0426 or [email protected] takes it too. The bank sets out the later stages, including the Banking Ombudsman route, on its own complaints page.
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