C***** MILK VERY BAD TASTE

This morning i bought a 2L C***** milk, i made my 9 year old his cereal he said to me it doesn't taste nice but i thought nothing of it as he just brushed his teeth. Then my daughter said the same thing, warmed milk in the microwave for coffee i didn't think it was off because the milk didn't curdle usually it does if it's sour and u heat it up.. I tasted my coffee and i was nauseated it had a disgusting taste. I am fuming because my son got very ill and we realized afterwards that he had the bowl of cereal with the milk, my son has diarrhea, at this moment while writing this review he has a fever!!!! My daughter has an upset stomach aswell and keeps saying she's nauseous and my tummy feels funny aswell. What i don't get is we bought another 2L at a differnt shop and guess what.... SAME DISGUSTING TASTE. I don't know what is going on but this is unacceptable!!!!!! My kids got sick because of this milk!!!!!!!!!!!!!!!