Wrong Billing and suspend line

Case No: ***9<br> Did an upgrade in Dec 2015 from a S4 which was R379.00 to a P8 Lite which is R199.00, In January i received statement that had a bill of R770. 38, which never was wrong which will take 3/4 working days to be , called the call centre and I was informed that they billed me for my past phone which was wrong and they're working on the matter and it will resolved it, came debit order date and the turned to debit R770.38 which was late reverse back and again I called after receiving other statement with a bill of R1303.00, I phoned again spoke 2 team leaders, Paul and Jerome no joy not ever a call back for the team leaders and I called again spoke to Constance, Sonto and asked to the Manager called Andre who made empty promise still never got back to me, called again on the 29 Feb, I was told Andre will call back still awaiting for the call back. My phone has been suspend due to Telkom **** up, told the so called manager Andre I want to cancel this contract advised not to but his failing to do his Job. Client service at Telkom Mobile has gone down.