First Data Corporation Bank Account Or Service Complaint

First Data Corporation Bank account or service department,

Checking account Problems caused by my funds being low North Carolina

I used to have a a Merchant credit card services through them, but the contract has been expired and I call them and I get a return address from them and I mailed the product back to them. Last month I check my account and they still taking money from my account and I told them to stop and i call - - bank and I ask them to step in. I never receive any feedback from them. this is the Merchant ID : - and this is the lease number : - and this is the USPS Tracking # - - - - - - I got the return address from them and I took it and stick it in the return box. I call them and explain to them and they try to tell me the merchant went to a wrong place. i ' m getting sick and tired of this game I need help because they are not happy with me because ii report the wrong doing they have been done to people in this country. I is a rigged system and I ask for help and I deserve to be protected. it is wrong and wrong