Shocking service from Standard Bank

My vehicle that was financed through Standard Bank was written off in an accident. My insurance settled the outstanding amount in mid-April, however a debit order still went off at the end of April. I phoned them on 26 April only to be sent from pillar to post, no one could assist. I eventually held on so long that I requested a call back which I received today, one week later (okay there were holidays in between). Once again, after holding for 10 minutes I was sent back and forth between vehicle finance and insurance but no one could assist to get my money refunded. I have given up, maybe they will catch a wake up here.