Hmm.... This is wacky.
It looks like although it says "Sweetwater" in the Title Tag, the pdf file is still being hosted on your URL (as well as the actual rebate form having American Music listed as the return address).
Maybe perhaps whoever added this rebate form to your website "borrowed" it from Sweetwater? And by that I mean, copied over the pdf file, changed the address, and copied everything else (Title Tag included), but forgot to take off the Sweetwater brand name?
Either way, it's on your own URL and it's a rebate form that includes your own address. Just get into your site editor and change the title tag and you should be fine.