Telkom expired contract Cancellation frustation

I have been trying to cancel my data contract with telkom for the past 3 months. The contract has expired but the debit orders are continuing. Being taken from pillar to post by the service agents. I've called and emailed multiple call centre agents who all don't seem to know what process to follow and I've also sent documents and filled in forms.

I'm very disappointed by this service having been a loyal customer for the past two years. At this rate I will not even continue being a pre paid customer.