C***** Milk - Gone horribly Wrong!

Our whole family believed in c***** for many of years, and has always been the Milk of choice in our household. but I really don't know what is going on???I have now purchased the 3rd 2 Litre of Sour vulgar tasting Full cream milk, with the expiry date yet to come in several days. Is this a logistic problem maybe? This now has happened at two different shops in Ruimsig, Roodepoort. Unfortunately our 3 year old daughter also had some last night and we were up with her most of the night with tummy ache...