Answer:
your banks customer care or your account officer
Step-by-step explanation:
if there is a mistake in your account the first point of contact you have with your bank is the customer care and this is who should contact first if you have any other issues with deposit of cash or cash withdrawals.
If you do have your Account officer details contacting him after the customer care will as well help accelerate the solution to the mistake you are experiencing with your bank accounts.
The customer care after receiving your complaints will lodge it to the technical department to handle if they can't help you resolve the issues you complained about.