Fake friends?

So today was the first day back and the bus was late. No one saved me a seat and so I’m going to be sat by myself for the rest of the year. In Spanish I tried to sit next to a friend and my other friend grabbed the chair. I walked away calmly feeling honestly disheartened. Then last lesson was art and it’s 3 to a table. And so I sat with my ‘friends,’ only to realize that I was no, 4 on the table. The teacher kicked me out and all of my “friends” said YOU need to move. Sat by myself all lesson. Then today they were going through what we had gained in the summer and the of course said she’s gained more SPOTS! I’m sorry do you not think it’s a struggle enough with out your comment. So anyway I stared into space and pretended I didn’t hear. I honestly don’t know what to do. Are they fake friends that like to pick on me?