COMPLAIN ABOUT MTN CONTRACT

i had a contract with MTN back in November 2020. The contract was for two sim cards that was delivered to me. After delivery of those sim cards i have decided to use my MTN numbers for the contracts. The very same month i realised they gave me the wrong package, they gave me airtime instead of data i requested for. I called them to complained about the matter and they advised me to pay the initiation fee of plus minus R400.00 of which i did but they kept on depositing money into my numbers. Last year after almost 1and half of complaining they advised me to wait until November 2023 as the contract was coming to and end of which i did and called them to cancel but up to now they are still busy depositing money into my number. i have complained to one of their department called retention several times but only one of my numbers have been migrated to pre-paid. i have proof of emails complaining about the matter and i also have references that they always give me when i call. Looking forward for your assistance Kind Regards HASANI RICHARD CHAUKE ***