account got hacked and then banned

Hello. about 3 days ago i believe, i was looking through my email and i seen a message saying that my account was banned. I hadnt played the game for over a month last game i actually played was sometime in october and decided to just wait until the new season starts and start ranked with by friends in flex all over again. I logged into the site account, and noticed that someone had logged into my account, spent some blue essence as i hadnt unlocked zoe at all and played nothing but SR normal games and one ARAM match before the ban. I didnt notice anything as they made sure not to buy RP as my paypal and card are linked to my google account and id get a notification of someone spending money on my account. Ive sense changed my password but i feel the damage has already been done. I submitted a ticket, and showed them the last game i played which was a gnar game and explained that i had taken a break from playing league into the new season when all this started. Im hoping that i can get my account back, and was wondering if there were anything else that i could do to get in touch with riot or provide any more info to them as i hadnt gotten a reply back from them in a while. ill try to wait it out if i have to, i just dont want to lose all that is all. If anyone could help or offer advice, that would be really appreciated. thanks.