We received a Staples rebate card for $60. I used almost $30 in one place, no problem then tried to use it as a split at the grocery store on an almost $90 charge, and the entire thing got paid! I know I'm on the opposite end of the spectrum here, but ?? That's not what is supposed to happen. Tried to call Staples to find out why it went thru, and they wouldn't talk to me w/out giving them personal info. Er, no, not going to happen. How can more money than is left on the card go thru on a prepaid card? And what happens now? Has anyone else encountered this?