Today I went to Best Buy and purchased two DTV converter boxes. In addition to the two coupons I had to pay $48.86 additional. When I returned home my wife said that the value of each card is $40.00 and I didn't have to pay anything. I find out now that Best Buy only carries a higher quality converter box and that's why the extra cost. I returned to the store and returned the two boxes and got my $48.86 back. However, they could not return the two government issued cards because they were already possessed. Now they have $80.00 of my money that they will not return to me. The government letter containing the two cards says that they cannot be replaced. What should I do, if anything ?