Little River Butter sold by Pick n Pay

I am really disappointed and even upset - with the Little River Butter produced by Luzandia Food Distributors retailed by Pick n Pay (Mulbarton). I bought 8 x 500g blocks of the product from PnP Mulbarton and all the butter had a rancid smell and taste. I no longer have the till slip so I cannot take the ****py product back to PnP Mulbarton. PnP - can you stop stocking the products from this distributor... PLEASE