Stop and Shop complaint: Rotten salmon

My husband bought 12.00 worth of salmon on Feb4, 2021. It was wrapped in plastic with the bar code sticker on it. I immediately put it in the freezer. Yesterday I defrosted it, and when I unwrapped it, it smelled terrible. I threw it out and saved the barcode sticker and the wrapper that the seafood dept wrapped it in. I took the wrapper and bar code back to the store today. They didn’t want to refund my money because I didn’t have a receipt. The price was on the sticker and why would I save a receipt from Feb 4? Then they got the manager. Another idiot who couldn’t understand why I have the wrapper but not the receipt. Maybe I was supposed to anticipate that the fish was rotten when I froze it. They finally gave me the $12.00 on a gift card. This is the third time in 8 months that the salmon has been spoiled. I will never buy fish in that store again. And your courtesy desk needs to learn what courtesy means.