Poor service. Cancelation not done.

I phoned on 30 September to cancel my contract. I was told to make an immediate cancelation payment of R180 which I did. Also told that it would cancel straight away. And debit order would not go off. I was promised a call back if i ran out of airtime. Was put on hold so that a supervisor would cancel. Was on the call for 37 minutes, airtime ran out, still waiting for a call back 11 days later. Debit order did go off. Can't get hold of anyone.