Continuous Billing after settling account.

I had a few months left on mine and my wife's cellphone contracts. Because we were immigrating I got a settlement from Autopage to close our accounts and move our numbers on to prepaid. I paid R16000 +- and the numbers were put on to prepaid after days of begging and pleading. Now 1 month on I get debited R2900+- from my account. So I had FNB reverse the debit and I queried Autopage about this amount. Bearing in mind they gave me the settlement. I have now had another account for R2666. They are telling me I owe the a further R4225. I have tried to contact the accounts department with no success for an answer. Bearing in mind I am calling from the UK now. <br> Please tell me how this is possible Autopage. And why does no one respond to my emails. I have been emailing a lady called Maggy Taunyane who is a Collections Agent