Well yesterday I went to buy a new distortion pedal and a cable. I had a giftcard for 50 dollars that my mom had given me. Well when we went to pay it turns out the card was only for 15. My mom didn't have the receipt so we went home. I had to use all of my money which I could of spent on other things. Now my mom can't find the receipt and shes sure she handed the cashier a $50 bill.
Then today I get an email from them for their sale they're having. You get ten percent off if you use your giftcard. I checked my receipt to see if they did and nope. Not even that. I can probably call but I don't know if its worth it.
Is there anything I can do? Has this happened to anyone before?