We too have been using this shop since we bought in Uzumlu nearly 3 years ago. We have found him helpfull in every way and honest.
If as Stephen says the locals don't use him then that is probably because he is a little expensive for some items, but that is the price you pay for convenience. If like us you do not have a car then the extra you pay for some items is still better than having to bus it to Fethiye.
Also I would like to add that unlike most, if not all the other shops in the Village he does put a price lable on his stock, so you know exactly what it will cost, then it's up to you if you buy or not. This rules out the one price for locals and an inflated price for tourists, which sadly does happen in other shops.
Also when we have shopped there he will always offer us a lift home, or if he is busy we go alone and he will bring the shopping to the house when he is free.
I can only think this issue must be a banking error and would suggest as Phil did it is sorted out via the banks and not the strong arm of the law.