Horrible service- *******

I was on a call with Portia from accounts dept, who like others that I spoke to hung up without assisting. I want to cancel my accounts. I was givin a premature cancellation quote on the 29th, I was told to pay R7051.28, I went to Vodacom in Gateway, and was told I need to pay over R10 000. They told me part of that money was for my other contract which has been cancelled Gateway told me my contract ***)is only owing R4434.45, which I paid in store. I have called 111, ***, ***(zillion times), ***, ***, my conclusion is no one is able or willing to assist. I have spoken to A very rude Mpumi(111) on Friday the 11th who was not even willing to assist. I called all these depts again today 13/03/2016, was told I owe over R8000! Part of it includes Money for my other contract which is for an upgrade I did in Jan which I cancelled and returned device in January. I was tolled I need to call online sales, they didn't want to help, upgrades told me accounts should have cancelled the invoice, accounts told me upgrades again.. I want out but they're making it hard. Why is the contract I cancelled in Jan not cancelled. What is the amount Over R4434.45 for. I want out