My experience is that you must keep two copies of every paper you send for the rebate. That includes rebate application, receipt, UPC bar codes, etc. My experience is that about two out of every three times they will claim to have not received some part of the required papers within the proper time. At this point you call them up and get a name to send your first copy to. Let them know that you have a second copy to send to your local consumer complaint agency. This is a lot of trouble but it works. I have never had any one deny the rebate after that. Once they learn that you are serious about this they will give the money and go find some one easier to cheat.