Complaint

I have a problem which doesnt seem to get solved. I was owing Telkom MOBILE from 2018 and i stopped paying and in 2021 iI started noticing that acoount has been closed at credit bureaus yet there is a company demanding monthly payment from me. Telkom is saying the account is not closed from their side but its closed at credit burea. I need to understand how did it come about that the account got closed at credit bureau while still oepn at Telkom. Why do i still need to pay a closed accounbt thats my major concern which Telkom need to clarify why there are discrepancies between their records and the credit bureau.