Bought a portable air conditioner. Waited almost 1...

Bought a portable air conditioner. Waited almost 1/2 hr for it to come out. While waiting customer after customer had theirs brought out. After repeated calls by salesman and guard at door still no ac. Went to complain and a manager came over and asked to see my receipt. When I reached in my pocket for it he indignantly said how are we supposed to know your waiting if your receipt is in your pocket. You should be holding it up so we know you are waiting. Really!!! After repeated requests by salesman and security OVER THE STORE PA SYSTEM I am supposed to be waving my receipt in the air or something to let them know I was waiting. Was just about to ask for a refund when unit finally came.