The holiday shopping season is over, but the issues you’re having with a product might not be. Here’s what to do about it. Whether something you bought arrived defective or damaged, or not at all, it’s a good idea to go back to the store or website first to try to resolve your problem. Be ready with receipts and any documentation that might be helpful. If you can’t find help at the store or site, use this sample complaint letter, which you can...