Vodacom

Please assist me.I had a 24 months contract with vodacom which ended in July 2023.i called them in Aug the 14th 2023 to cancel sim cards as I don't want to continue with sim only contract.Vodacom debited my account in August and September.i made reversals for both transactions as I informed them to cancel the simcards.I called them in October begging to query this but I was told it will be corrected after they made their investigation.I was told to expect a call until now. I have not been contacted.Now they listed my account in credit bureau to say that my account is in arrears.I want vodacom to cancel those simcards as I intended in August.and I wasn't them to remove my account from credit bureau.it must show paid up not in arrears as I don't owe them.I no longer have those sim cards.Why would I continue with the contract if I don't have them