Wors which was off

I bought 2 packets of wors on the 24 March 2024. We ate the first packet about 2 days later and we did notice that it had a strange smell but we didn't think much of it. Then a week later we tried to cook the 2nd packet and then it became obvious that it was off. I then returned it to Food *****'s Market Lynnwood Corner. They requested a receipt which I obviously didn't have anymore because I don't keep grocery receipts since I don't expect to encounter problems with the grocery items I buy. They simply refused to help me even though the sausage was clearly branded with their shop and the date was still on the packing. I was truly disappointed