Hi - please don't yell at me if this is a stupid question....but I imagine that having an airline DEBIT card give you the option of going into CVS, making a 3 dollar purchase, taking 400$ cash back, getting the 403 miles, then just putting the money back into the bank the next day? 3$ spend - 403 miles?
Maybe.....probably not, they've got to have a way to block this from happening, right?