C***** Milk Is Off

I have purchased C***** Milk all of my life, this is the third time this has happened. I bought the milk, get home and open it to find that it is already spoilt. It is disappointing as it is a waste of money, secondly, I cannot rely on such a big brand anymore in knowing i will receive quality, thirdly, i have sent C***** a direct message previously, to which i only got one response and then silence.