This guy trapped me in a duel and took about 50-60k from me.
He keep on doing some glitch thing where there was no replay and keep on going to another match. He also preceded to shovel me over many times after I said I had to go when I took about 10k from him.

Bannable yes.
But they need proof.

It depends, he spectate and joined fast or something like that?

You need proof.
It depends on what he did.

auto start without the replay going on = It's a bug or someting, i lost 10k bc of this.

spectating then entering very fast (forced match) = It's bannable.

w0w I had to go so I didn't take any screen shots. ugh well. I guess I hav to work my 60k back