Telkom appalling service

My husband cancelled his contract in March 2018 and is still being billed by Telkom.

He went to the store several times and was informed that they cannot help him, he must call the call centre. When he calls the call centre he is told that he can cancel at the store???

He is completely frustrated as he is being sent from pillar to post...

The call centre cannot call you back...you are placed on hold for half and hour or more before the call is attended to and then you are told that they cannot help you, you must go to the store or cancel online.