I cancelled my contract

Previously I had a lot of problems cancelling my MTN contract as it appeared that MTN had no call centre for MTN contract customers. After months of fighting and complaining I managed to get the contract cancelled and my mtn number was migrated to a prepaid number. Then I get a message now from MTN that I owe R706 and I must pay that by today to avoid service suspension and legal action. I verified with the agent that my last payment would be in June which was paid as well as cancelled all insurance attached as well. Now that I have a prepaid number I can't call the 808 number because that's for contracts only. So now I am going to take legal action and will be forwarding this complaint, all email correspondence and calls to the Ombudsman. This is disgusting from MTN I really feel so sorry for your customers MTN and I know I'm not the only person. I dare you to suspend my service. Just wait and see.