HARD GREY BLOCKS FOUND IN NAN1 GOLD MILK

I had purchased a big tin of Nan 1 Gold milk from Dischem and started giving my 3week old son I noticed him in some tummy pain and was going out with a upset tummy and I tried to figer out why. I had taken him to the doctor who asked me to check the milk and expiry date. When I got home I checked the expiry date and it was fine so I was looking at the milk powder its self and found small and big hard greyish stuff inside I call customer care but no joy I have the grey stuff still with me. If this matter isnt resolved I will put it in the media along with the pics of both the tin and the stuff found inside I have. I await the response and solution to this issue