I don't understand

So I asked my grandma if she could get a can of formula till I get mine wic on Tuesday and she got the wrong kind and I said he can't have it so I get yelled at and she blames it on her having a bad day and that she's done trying to help and tells me to get my own when we have no money and none on my wic the my boyfriend's comes in and tells me to stop crying about it seems I can't do anything right when it comes to my son