NO HELP & VERY UNPROFESSIONAL

In 2019, I took out a contract with MRP mobile. This contract ended in 2021, and I settled the entire balance in May 2021 (Amount R1971), at the Westwood branch in Durban,KZN. According to the staff at Westwood Mall in Mr Price, all was sorted. It even reflects on my bank statement for that month as it was a card payment paid directly to the store under the account. Last year, when checking my credit report I noticed that the account was showing up as a Nimble account, meaning that it was handed over. I have contacted Nimble to query this multiple times, and each time after sending the proof of payment, there was just a response to say feedback will be given, yet nothing has been done to date. I first spoke to Madimetsa at Norman Bisseett in July 2022, and then to Nicole in March this year. I've also spoke to Mr Price call centre which was no help at all, but rather very rude and arrogant towards me. They keep saying they cannot do anything as the account was handed over. I asked them to send me a statement or settlement letter as they have informed me that the account is showing as paid but handed over. At Mr Price, I have spoken to Portia and Nadia and both of them refused to help even after I explained that Nimble informed me that there was no update from them stating I have paid the account.