What would 당신 do if 당신 were me?

I know this is kind of stupid and everything and I'm overreacting.

But,whatever.
On Friday I was heading to my Language Arts class,1st Period.
We don't have assigned seats in that class but everybody sits in the same spot they always do so it kind of seems like assigned seats.
Anyways,I go to my locker every morning and wait to walk with my 프렌즈 to that class,so we're usually the last people there.

There was a guy sitting in my 좌석 and I shrugged at my 프렌즈 as I walked over to him and asked if the teacher had changed his seat.
He said No and I told him I usually sit there so I wanted to know why he moved and if I could sit where I usually sit.
He brushed me off and yelled at my to go sit over at his old seat.
Class was going to start so I went over to that seat,but I was completely distracted since he sits in the back of the class 의해 all the annoying kids who are distracting.
The 좌석 I used to be in that he is in now was in the front of the class with people who weren't distracting and I learned a lot up in the front.

So my 질문 is,what should I do,or if 당신 were in this situation what would 당신 do?

I don't know if I should just suck it up 또는 sit back in the class 또는 try to get earlier to class and get my 좌석 back,but yeah..

The teacher noticed that we switched.
She also scolded him and said he might go back to his old 좌석 if he doesn't stop talking to the person behind him. So I'm unsure if I should wait for that to happen.
I think my teacher thinks that we agreed to switch maybe?

Thanks everyone for answering! <3