Call Centre fail

I contacted the Sterns call center after receiving an SMS, to inform Sterns that I had made an EFT payment on the 30th September. I was informed that my payment will only show on their system on the 5th October when an EFT only takes 3 days to another bank. Add to this the fact that my name is double-barreled but I am only ever referred to by the last part of my surname even after clarification. Last but not least the attitude of the call centre agent was such that I stated "it is just too much trouble to deal with you people", and closed the call.