Bad Service!!

I am totally appalled by the service rendered by Standard Bank... 3 months ago (yes 3 months) I have been debited by African Bank incorrectly for a loan I did not take on my Marketlink account. I have escalated this issue with my Private Banker twice now and in all occasions nothing has been done and Keep get debited every month. On tracking this issue with African Bank I was told that the Standard Bank should sort out the issue, on checking with Standard Bank they said African Bank must sort out this issue..... Like really now? Please sort out this issue!