Nandini Milk — nandini milk spoiled

Hi

This morning we bought 2 litres of nandini milk, (Half litr packets) immediately when i boiled it, it got spoilt and to check once again i checked remaining three packets n happened same, when i complained the shop keeper he didn't take responsibility of refunding me amount and he asked me to raise my complaint here, kindly do not fool customer plz, i don't know whether it was dairy fault or shop keeper, kindly take necessary action.