What would this be called? Should I take this seriously?

I know this isn’t ok but this happened and I’m not sure what to do about it. I had these guy “friends” who would constantly grab my boobs and ass and sometimes even stick their hands down my pants when I kept trying to get them to stop. I am 17. I’m not friends with them anymore but I still don’t know what to think about all of this. Update: thanks for responses I wasn’t sure if I was over reacting or not and didn’t want to call it something it wasn’t!