I hope to solve this problem， and its not the first time happen.

My account was unauthorizedly logged in without my permission, resulting in the use of an inappropriate language and being blocked. Is there any solution? As I am currently an international student, I have not found the corresponding online customer service and cannot respond to the current situation. What should I do? I think players who love League of Legends have a lot of recharge for this game. If my interests are damaged, do I also have the right to appeal rights?