Credit Card Refund

I am very disappointed with the services I have been getting at FNB,I had a credit card with them which was handed over to the attorneys(GROENEVALD). I paid and settled the account, I even received a settlement letter on the 28 January 2019.I was paying the account monthly via stop order from Nedbank to the attorneys,it happened that after settling the account I didn't stop the stop order,so they deducted another R1000 in my account n the 1st of Feb 2019,I have been sent from pillar to post,from FNB to the attorneys,when I call the attorneys the lady called Greer releases my calls,she doesn't even respond to my emails. I decided to go straight to the FNB branch in Kempton Park and I was assisted by a supervisor Nomandla Mncwabe who called the attorneys and they confirmed that my money was transferred to the FNB account which I once had,she then required me to send a proof and I sent her the statement,which was sent to Immaculate Lesisi. Today I just received an email saying Groenevald never sent the money to FNB,its been 3 months now and it seems like ill never get my refund.Please assist.....