Off produce

I bought LONG LIFE milk (parmalat full cream) less than a week ago from Apple Tree Meadowdale mall. Upon opening EVERY SINGLE Carton, it is Off and separated. Ofcourse I dont have my slip to prove this and return the milk. I am beyond furious as this is not the first time stuff bought there is off and manky. Would going there and making a scene even help... I CANT NOT DEAL with disgusting customer service and they will most likely not take responsibility as per me not having my slip. So mad right now, milk is NOT CHEAP