Cancelation not considered

I took a contract with Vodacom Protea Glen and was promised that My number will be ported after the contract in force.. After a month in the contract I was told it's not going to be possible. I took upon myself to fight this issue to get the contract canceled. A promised was made again that they(Protea Glen) will try to help me. After 6 six weeks of waiting and trying to get proper help I became impatient with this process and decided to take back the cellphone and Samsung gear. Thinking that this contract will be canceled two days ago I was billed despite retuning the goods. Three weeks ago I then went to Vodacom complaint site to ask for intervention I was then given this reference number 00ZD~DVQS and was promised that a consultant will call me. Even today I am still waiting for that consultant to call me. I feel helpless and discouraged by this process. Please assist.