I think it would take a lot more than just making too many returns to be banned from a store...it would probably be repetitive and excessive...for salespeople to recognize you and realize that you are making a lotttttt of returns...i've worked in retail and after a year or two, i started to recognize the same people that were coming in and buying and returning stuff. sometimes they come to "buy" something just to "talk"...possibly because theyre lonely. and other times, they buy the items and return it to get a different form of refund than what they had originally used.