Poor service from Billing

Someone used my banking details and email address for his contract and I was charged monthly for that until I rejected it. Since then I've been paying manually, recently they are charging me R200 for rejection fee where as I don't even get the notification from my bank. In April I called and the lady I spoke to was able to assist me while I was on the line. Yesterday when I called for the same issue it was not resolved by Wesley from Billing. Today I called and Nompumelelo dropped the line on me, I called again Tshegofatso did the same thing. Right now I am on the line again with Precious.