Charli… Astrid… Hind S… Aditya…

Where should a person go to find help when their game profile has been hacked and they are locked out of the system today? I have a lot of time and effort put into my progress and I do not want to lose it all to a stranger. I am looking for a way to contact the right people and get a fast solution to this security problem. @League_of_Legends (LoL)