Frotten Cider

I bought a 6 pack of Cider our local Pick'nPay we don't remember seeing there before, theyre were loose tins that looked beat up so I found a 6 pack and today after tucking into an evening beverage it just doesn't taste right, my partners now drunk aldcmost a whole one cos he doesn't know what this brand tastes like, I look and it expired in January... I've tried calling their contact details and no answer anywhere.