Purchased 3x2litre milk all got spoilt before expiry date infact 2/3days before date of expiry i need to be refunded

Purchased 3x2litre milk all got spoilt before expiry date infact 2/3days before date of expiry i need to be refunded.reported to westham bakery in longbury and they have played deaf as if this is normal practice. Kindly resolve this. Im your loyal customer