RCS cannot respond quick to a complaint

Through internet banking I paid the incorrect amount to RCS (was meant to be for my bond) and only realised the mistake after the transaction had gone through. My bank was unable to reverse the amount so asked RCS, with repeated e-mails and telephone calls, 1 month later still waiting for the money to be reversed, and never do they respond to my email queries asking for a status update. <br> Shocking customer service, but if you are late in your payment to them they hound you with sms and calls.