Keep on taking money

I only rate them 1 out of 5 because I can't give 0

My wife called this company in November 2017 inquiring a settlement amount for an account with them. An EFT was made the same day. She also received a zero statement once the money reflected in their account.

End of November 2017 the still deducted the monthly installment off of my wife's account.

She gave them another call asking them to rectify this mistake on 04/12/2017. She was told the money would be sent back to her on 06/12/2017

Up to date 12/12/2017, this money has not yet been returned, On top of this R93-68 interest has been charged on her account witch now reads that her account is in a positive R571-74. Where did this interest get calculated from?

She has mailed them today 12/12/2017 awaiting a reply.

My problem is that all the calls to them my wife has to pay for. How many more calls will she have to give them before this is sorted? The money could be accumulating interest in my wife's account and not in RCS's account.

Could someone from RCS who is empowered to make decisions please sort this out ASAP as this is looking more and more like theft to me and nor a simple error.