Bad after sales service for biltong thats off

Bought 3 packets beef 1 chicken and 2 smaller packets chicken packets of biltong today, the 18th june 2024, just to get home and and all 3 packets of beef smells sour, called just to be told no refund can be made without a receipt, even if i have proof of payment on my banking app as i paid via card. I wouldve unstood if i paid cash and had no receipt. Wont be buying there again. To drive all the way from mitchells plain to get outdated biltong