Vodacom poor services

I'm very angry with vodacom poor services. I complained about overcharges & difficulties to have my contract number cancelled.They called to promise my contract number *** has changed to prepaid. Yesterday l received a message from vodacom state that my contract was on prepaid, unfortunately the number they put on prepaid is not my contract number. Currently my contract is still active. Am not responsible to any statements they send,if they can't close my account they should be responsible for all costs in future. I don't understand why they can't employ skilled workers. All l see with vodacom is unprofessional & *********** with their jobs. Am done with vodacom if my contract number is not on prepaid,vodacom pay for it period.