M&T Bank Bank Account Or Service Complaint

M&T Bank Bank account or service department,

Checking account Problems caused by my funds being low New York

I told the bank to stop payment for a mortgage i was going to pay at a later date because I knew i had insufficient funds. They told me that i have nothing to worry about and that they 'll take care of stopping the transaction.I told them again as a reminder 2 days before the trancsaction. I gave them 5 days notice total of the transaction, I later found out they had let the transaction through not once but -, since i didnt have enough funds i was charged - insuffiecnt funds fees for - dollars each. And now they are telling me its my fault for not having the funds even though I gave them a notice to not allow payment.