Vodacom- poor service.

Last year it took Vodacom 8 months to find my contract and cancel it, they blamed the IT system for the problems. The main problem I have is that when I called the contact was cancelled I couldn’t use the contract anymore, but they still debited my bank about for 6-7 months. When I asked Vodacom I was placed in a conference call with a sales rep, customer care and accounts each shifting blame. On that call it was said the Vodacom did stuff up and that I was entitled to a refund. Then I get told this matter has been escalated but know one knows who or where this escalation has gone. They said someone will call me. Still waiting for 3 months. Vodacom is refusing to even acknowledge my existence, they ignore my emails, phone calls ect.