Two years ago, I used to have an OM package delivered to me weekly (FAR deals where I could use $50 off $150 coupons were nice), they kept just sending me extra crap weekly. I mean, it wasn't even stuff I wanted, they'd just throw in more FAR items that they wouldn't charge me for. I'd call them and they said, "Just keep it." They did it again the next week, I told them this is the second time it's happend, the guy said it's not worth it for them to come pick up the additional items, etc. etc. He said don't bother calling in the future unless they call me.
Granted this was stuff that is probably worth no more than $20, but I ended up with about 5 keyboards I never ordered by the end of the summer.