Bad service c*****

I bought n six pack long life milk that was used to make n sweet desert at a family function. Suprise suprise it was sour and spoilt my whole sweet desert.the ingredients other that the milk was over R300 that went to waste.everythng had to be thrown away.I contacted c***** and they sed that hav to collect atleast 2litre. How's that possible if it was thrown away.I asked for the management to contact me and after a week now Still no response. C***** is gone **** the products are always expired way before time and we still don't get any form of reinburstment????