Disgusted with Service

Thanks to Vodacom I have been without my phone for 3 months and the same problem persisted with the phone 4 times I have checked my phone in I have now had it with Vodacom my phone has been cut because of Vodacom and now I really sit without a phone, data and airtime and my Tampered Glass how does Vodacom expect a Customer to pay for something they don't use.. I want my contract cancelled because as a Customer I don't feel the need to carry on with my contract if I was being treated like ****. I have asked for a Manager to phone but yet once again i got phoned by a customer care person and was told the phone is back on its way to the Repair center with new software ect. After 3months how does that work how stupid does vodacom think I am?!! Now what am I as customer to do!!