Mis management of payments received.

I had 2 Neotel accounts - 1 for a internent ****le and the other for a mobile phone. Once the ****le contract ended I did not persue further. The phones however I continued until contract ending. Monthly fees were religiously paid into Neotel. I am now sitting with a Nudebt application against me for funds "not received"by Neotel. It does not matter that I have forwarded the proof of payments through at least 6 times for them to rectify and allocate the funds. In trying to communicate with Neotel - this has been unsuccessful as either there is no answer or when I do get through they will look into the situation and revert back. Nudebt - well despite the fact that that I keep forwarding the proof of payment through on a monthly basis another consultant harasses me for payment. The 2 accounts in question are R ********** 29 and R ********** 93. They have wrongly allocated the funds for the telephones to the ****le account and are clearly incapable of fixing their mess.