DEBITS FOR ACCOUNT THAT WAS PAID AND CLOSED IN MAY 2017

So I find myself here again. It is August and yet again Cell C has debited my account for 2 different amounts for a contract I paid up and closed 3 Months ago ( I will not even go into the details about the challenges I faced with Cell C when I requested to close my contract with them). The first debit was for R141.62 and the second for R 250.00. I called in 3 days ago for assistance and sent my bank statement as requested by Andile Gumede from their billing department. Who according to him could not see the debits on his side .I still have not received any kind of feedback. The same issue had occurred in July as well ; being debited for a closed account. This is the same reason why I have ported back to Vodacom. I was assured in July already that this issue would not happen again. Cell C I would like my money back as soon as possible. I am no longer on contract with Cell C or a Cell C customer so I do not see the reason why I should even be doing business with your company.