My account suspended after proof of payment sent

My account has been suspended by telkom for almost a month now even though they have received proof of payments I sent through to their agents. Now they've sent me an invoice saying I owe them payments for the past 3 months that amounts to more than R3000. When I call in they say the system hasn't been updated and they have escalated my problem to management yet I haven't received communication from them updating me about the investigation being made. I am disappointed with telkom with their poor services I have received, for their lack of ownership, integrity and leadership.its truly appalling to say the least.<br>