Contract upgrade false advertising

Firstly i upgraded my contract 4 months early and am now being charged for my old phone as well. When i phoned in to ask directly if my old phone would still be charged for, they said NO. I said i will definitely cancel the new contract if by they charge me for it and they said no problem, no cancellation fees would apply. They actually said it. Now after my call being dropped 5 times, trying to return my phone and revert back to my old contract, no-one can help me. I specifically said that i would rather wait until April if it is the case the my old phone would still get charged for and they assured me that it won't. Absolutely *****, no question about it. Don't go with Vodacom. They will commit ***** to sign you into a contract.