Vodacom customer service incapable of performing duties

I have been trying to cancel my vodacom contract since the beginning of Jan for a contract that expired months before and till this very day the contract has not been cancelled and I'm being debited for somthing I don't want and not using... I have called more than 4 times and ecah time get told that they will sort it out only to get debited come end of the month. I am emotionally drained regarding this matter as I'm now being forced to have somthing I don't want as a consumer I feel violated and I'm very disappointed with the service and lack of urgency and professionalism aswell as the lack of interest from superiors as I have logged many calls all in which I have complaid and yet no senior has contacted me or tried to resolve this issue as the people that have been handling this issue are clearing not performing their duties. I want all those agents to be debited for this contract until vodacom sorts out this matter as I'm in this situation today because they did not do the job they being paid to do.... And I have to pay the price. I have been with vodacom for years and I'm sick to my stomach with the service I'm receiving after so many loyal Years