Riot Games Closed My Account Without Reason After I Deposited Money

I'm writing to tell you how worried I am that my Riot Games account was suddenly closed. My account has never been sold or given to anyone else. A few days ago, I put money into my account, but it was closed without any reason before I could use the money. When I tried to get help from Riot Games, they seemed rude and unhelpful in their answer. This makes me very angry, especially since I've been a supporter of the program for a long time. I really want to get back into my account and get to the money I put in it. I hope Riot Games will look at my case again and settle this problem fairly, since I have always followed their rules.