needalaptop

I went in to a local CC last night and at first they didn't even know about the free smart tip and it wouldn't scan as a package deal. Finally located it in the store ad but it clearly says the free tip is 20047 which is the compaq/hp tip. I need 20050, the dell tip but they wouldn't let me have it Is there another add or promo somewhere that says any tip? Or do I have to go back in a couple of days and try doing an exchange without my receipt?