Dispute with Brolink

Absa dually insured my house, one was being debited directly from the bond and the other was debited separately from my account. After identifying this I was told that both parties has to do a 50% refund but now Absa Brolink is dragging its feet when it comes to the 50% refund that they must process on their side. Now I'm being taken from pillar to post no one wants to take responsibility. I'm fed up really. I told them that I want my money back.