TERRIBLE PROBLEM WITH BILLING

A colleague of mine has an account with MRPmobile so I am writing on her behalf as I have been assisting her with telephone calls to the call centre. On the 13th September 2017 she made an electronic payment to MRPmobile in an amount of R265 after receiving calls from their call centre. A few days later collections called her and advised her account is in arrears whereupon I advised them that she made the payment as I assisted her. They requested that proof of payment be emailed to them. Same was attended to. Then a few days later more calls and sms followed. We then called the call centre and they advised that the proof of payment should be resent but this time to a different email address. This was also done. Then more calls followed, we then called the call centre again as this has now become a frustrating experience. On the 6th October 2017 another payment was made in the amount of R169. Yesterday my colleague called the call centre to have the sim unblocked and that she should make another payment of R95 as the account was in arrears. She made the payment and then called in this morning to advise them she made the payment and that they should unblock the sim card. However the call centre then advised that she is in arrears again and should make another payment of R169?????? Can someone please contact Mrs Bande on and have this mess sorted out? It is not her fault that the accounting and call centre department do not communicate or do not have an effective system in place. This creates a bad impression of the MrP group????