Horrible service from vodacom

I have been trying to cancel my data contract with Vodacom and I am receiving ********** service.I spoke to a lady by the name of Kim who is very rude and disrespectful.

Everyday I am speaking to a different consultatnt who is sending me from pillar to post telling me that my issue is being escalated but when I make a follow up,there's no feedback. My contract is ending on the 8th of October I have been requesting for the contract and the number to be cancelled, to my surprise my current invoice is inclusive of a service I requested cancellation for and I am told I have to pay for it.