Bad Customer service by MTN

MTN has a bad business practice, i had a contract with them of which i settled in 2019. in November 2023 while reviewing my credit report , MTN account shows that i am in arrears for more than six months. i called MTN and was told the insurance was not cancelled when i paid up the phone. so they sent me an invoice for the insurance of which i had to settle for the insurance to be cancelled.

I settled the invoice as advised by MTN on the 25th of November 2023 and i was told the insurance has been cancelled. when i called MTN to get a paid up letter, i am told this account is still active. So MTN please fix this as it is negatively affecting my Credit profile.