Who am I paying?

I have cancelled my contract with Telkom but there was still an outstanding balance. I had made an agreement with them to repay and all was well until I think they pushed my account to a third-party. So all the calls I made to the call centre didn't mean a thing. I have asked for my call recordings to no avail- this I hope to send to the finance ombudsmen. What bothers me now is that the 3rd party goes into my account any time without tracking for funds, and if funds are not available,the bank charges a fee. I called again to agree on a presentment date , yet on the 15th of Oct the 3rd party debited my account. So who should I be calling? The 3rd party or Telkom? And the 3rd party called me some time ago to give me my balance, which was different from what a Telkom agent told me. So who am I paying? The 3rd party told me about an R800 penalty fee, yet I had made a payment arrangement with Telkom. Can I please have my recordings to send to the ombudsmen.