At my wits end

I've been a customer for 10 years now, was happy with it until a month ago. They deducted an amount of 1059.85 on the 18th of March of which its an old consolidated loan amount. I called them and afer going through what seemed to be a hundred consultants I was told it was a technical glitch and was told that the money would be deposited back to my account. Till today there's no money back in my account. I called yesterday again and was told about another 3 to 5 days working day. Money that I really need. I'm just frustrated. At this point I'm considering changing banks. They will never understand the inconvenience they have caused me.