Got the account informations, after 45min someone logged into the account from another computer (LoL system message) and changed pw+e-mail again. i messaged this guy in skype, he said he wasn't it (i trusted him, but for some reason the resetted password was the one he used before - got it with luck and testing), so i changed it back and did send me a recovery link after changing e-mail and pw back to mine. Now.. after ~6-7hours i got the same system message from LoL again, and password and pw is changed again, also my password recovery link wasn't working anymore.
I don't know, but i feels like he is just recovering the acc all the time after getting my fkking 170€ for a Diamond acc