Able ? Or Out Of Luck And Stuck

hello Good afternoon. My name is Loasta. I'm from Wewoka Oklahoma. January I , well my husband purchased a calling card. (GoPhone Refill 45$). At&t. Being unfamiliar with any phone cards. Ever. He was suppost to purchase a Straight Talk 45$ at&t. But instead he grabbed the 45$ gophone calling card refill .. Both forty five dollar cards and us not having any sense of thinking. I did what the operator man said and followed instructions. Come to find out it was the wrong calling card. . so I jump on lines and figure this out. Which I'm still trying. . And now I am not being able to even get to try to figure this out. My mobile phone is a. LG AT&T.straight talk activated . I accidentally bought a wrong calling card. (Gophone 45$ REFILL ). I ONLY SCRATCHED BECAUSE I THOUGHT IT WAS THE CALLING CARD FOR MY PHONE. SO WAL-MART SAID I AM S.O.L. Is there anything anyone can help me with.? ... I understand this is a non refundable. .. I am not asking for refunds. I need my phone. I can not loose 45$. :(AM I JUST LOST OUT???