Vodacom

I have a router data contract with Telkom for many years however I want to cancel the contract because the router doesn't work properly anymore. I have contacted the cancellations department numerous times for the past 3 months. They say my contract is on their old system so "someone" will have to call me back from the department which has access to the old system. After numerous attempts, still I have not been contacted and my contract has not been canceled. I am wasting a lot of money because the debit orders are going off every month and I don't have access to even use the data. Once again, it is a new month and another debit order will go off for something I cannot use and been requesting to cancel. The last time I called the cancellations department, the consultant I spoke to said he can see I logged a request a number of times so he will escalate the request and get someone to contact me. This was in the beginning of March. Still I have had no response till today.