Annoying family members

I am so fucking irritated. I informed my siblings not to drink my milkshake and my younger brother decided to still do it anyways . I had a lot left and then I find my drink completely gone from fridge . Asked my younger brother if it were him and he denied it and then asked my older brother who said it was not him and confirmed it . I then vented to my older brother about my drink and he blamed me and said I’ve also drank my brothers drink before . I don’t take anything from family without permission mostly and if I do the next time I buy my own I offer him. I’m constantly blamed whenever I vent about something . I could be a victim in a situation but my family will always find a way to blame me . That affects me really badly. My younger brother is the only person in the house who has repeatedly taken others food/drinks but somehow I’m at fault .

So I ask my younger brother again and I called him on the phone . He was annoyed on the phone and said he doesn’t remember drinking it but he’ll replace it and I just wanted to know if it was him who drank it and he got annoyed and said “ I’m replacing it and I don’t know what else will make you happy” he said in a rude tone then hung up . Lately he’s been quite moody and snappy for some reason . I know this is a trivial issue but my emotions are so heightened at the moment . I just want to be alone and have my own space and be home alone for the next 10 days. I know when my brother comes back with the replaced drink he will be naggy and have something to say and i don’t want to argue.