What is the full address of mbt bank? The full address of bank headquarters is 245 J Street, Forest City, IA 50436. You can visit the official website of the bank at https://www.mbtbank.bank for more information and online banking service if available.How do i contact nbt bank customer service? Customer service: You can contact the customer support department of the bank by phone call to 1.800.NBT.BANK (1-800-628-2265), or by email at: [email protected] Hours of operation: Using the ATM & branch locator, you can view the exact hours of each location.What is the mt bank phone number for customer support? This is not the most popular M&T Bank phone number (it's ranked #2). Most customers call 800-836-2826 for support.Where is the mbt bank clear lake highway branch located? Clear Lake Highway office is located at 1919 East Highway 18, Clear Lake. You can also contact the bank by calling the branch phone number at 641-357-6161 MBT Bank Clear Lake Highway branch operates as a full service brick and mortar office.