Incorrect charge

Good day<br> <br> MTN deducted money from my account wrongfully<br> <br> My contact has expired and I followed the process to let MTN know I do not want to renew<br> The process completed and I was switched to Prepaid<br> <br> Steps to not continue with contract<br> <br> 1- dial 808 before the date you suppose to receive your airtime and data<br> 2-wait an hour before you actually speak to a consultant<br> 3-tell the consultant you do not wish to continue with the contract<br> 4-wait up to 48 hours for the contract to be switched to prepaid<br> 5-recieve a SMS that you are now on prepaid<br> 6-watch MTN deduct there instalment anyway<br> <br> I want to know why did MTN debit my account when the contract is finish<br> <br> I want my money back<br> <br> Ricardo