To improve your chances of getting a full refund, provide a sales slip or gift receipt, and return the item in new condition, unopened, and with all original packaging material. Returns without a receipt are subject to the retailer's posted return policy, which might result in receiving only a merchandise credit for the lowest price the item has sold for in recent weeks, or possibly no refund or exchange at all.
If the item to be returned is defective, some states such as Massachusetts, require the store to give the consumer his/her choice of one of the three "R's": repair, replacement or refund, irrespective of the store's posted return policy.
Consumers who have a problem returning a gift, should first contact the store manager or customer service department of the retailer. If a satisfactory resolution is not obtained, then a complaint can be filed with the state Attorney General's office or local consumer agency.
Information from Consumer World magazine.