Cannot cancel a deceased contract?

I am utterly disgusted with the service in telkom stores. On numerous occasions my partner has tried too cancel his deceased aunty contract as there is no longer anyone too pay for this contract and on all occasions telkom has refused to cancelled the contract saying we need too do it online but how is that possible if the telkom contract holder is deceased. We have been fighting a never ending battle with telkom for 5months now and I've just about had enough since nobody in store is willing to assist us I will go to your head of operations. If anyone asks me personally about telkom I will share my story and let them decide if telkom is in fact the best choice for them. Very poor service, nobody is willing to assist cancel a deceased contract. And for the biggest network I am utterly disgusted and disappointed.