****ty service for different customers

I am extremely dissatisfied with the service the agents at this bank give certain customers. Since September I have been callling to query my moretyme balance as it says I haven't made a payment, no one is able to fix it and when I called in on 02/12/22, I was so frustrated that I told an agent I wanted to dissolve my account but requested that should the call drop to call me back, he declined and after security check the call cut. A few minutes later he canceled my account, I called again to speak to a supervisor the lady said after 10 min, its been hours later and I am yet to receive a call or any sort of feedback.