M&T Bank Сustomer Service Financing & BankingM&T Phone: 1-800-724-2440 1-800-724-1930 (for the Hearing Impaired) Hours of operation: Monday – Friday: 6am-9pm Saturday – Sunday: 9am-5pm Online & Mobile Banking Phone: 1-800-790-9130 Hours of operation: Monday – Friday: 8am-9pm Saturday...