I sent in a rebate form to a company locally that I bought a 350W computer power supply from. After 5 months of waiting for my $27 rebate check, I called the company rebate center for A+GPB company and was told that they mailed me the check 3 months ago--which I never received. I told them to verify that they have no endorsed rebate check and they said "too bad" and hung up. What recourse do I have to claim my $27 rebate check? I would not have pruchased that power supply except for the rebate. Thank you.