I go to to get gas this morning and the pump does not accept my debit card which I have used a week ago and it worked just fine. I call my bank and they tell me you hold back $100.00 and if you don't have that much your card does not work. Where do you get off holding a $100.00 of my money for a $20.00 purchase. I have been a member of Costco for 15 years. I had to waste gasd and time and go elsewhere plus .35 cents for the privilege of using my card there. I think what you are doing is wrong. Totally wrong and you need to change your policy thank you very much.