Stores that show cash used on receipt when buying gift card

[awebrun]

I purchased my first bitcoins on LBC with amazon gift card process but there was hesitation as they requested a receipt that states CASH as payment method. I purchased the amazon gift card from sheetz "gas station" with cash but the receipt did not list any payment method at all. Could someone list some stores that they know of in USA that show that cash was used on receipt so this doesn't happen again.