Worst Cancellation Policy

i would like to complain about Telkom Mobile. My dad had 3 cellphone and an ipad contract with them. For 2 years everything was fine until we had to cancel the contracts. We completed the form and the consultant in the Store(George) never told us to confirm telephonically for the cancellation...otherwise we would have done it!! They started calling us for upgrades we said we didn't want it. My dad has left for the congo and can't be reached, i have been there to the store to follow up but they say the retention did \call"me but there are no missed calls. In the mean time we have stopped the debit order and my service is cut off. I was forced to get a pre paid sim and i check daily if they called me but no calls!!! We want an answer now and these contracts cancelled!! there is no other service provider who confirms cancellation over a phone if the form for cancellation was completed!!!!!"""