Debeted my account after cancelling

I have done so many components about Rains service or lack of service and have never been helped. Finaly I cancelled my rain service last month and and received confermation that it would be cancelled with the ref number ***7. I confirmed that no further deductions would be made on my account other than the R99 that I made a payment arrangement for due to me changing my payment date over a year ago. Thos morning rain STILL deducted the full subscription money from my account and due to that there is no money in my account to pay for my new service provider. I need the money that was deducted to be payed back into my account today as there was no further payments to be made.