Extremely poor service from vodacom.

I have an acc with Vodacom with they deduct money that we did not agree on. I have tried all l could with no joy. I have messages were they promised to get the recording till today. I have been phoning to speak to the supervisor still no joy. Tried to migrate but they denied. I have been to their shops still no joy. I requested for the cancellation quote which l received within a dash of speed showing that they dont value me as the customer. I have kept the messages and audios as l record them always. I never signed for the contract. All they pushed is for me to upgrade as l was due, not knowing l was being **********. Since Oct 2018 l have paid more than R17000.00 for their contract l have requested for the cancellation and over the phone they said 17 000.00 on the email its 19000.00