Perma ban

Not played on my account since October 2018, someone changed the password. Well i restored, I go into the account and look there Perm ban. the last time I played my honor level was the maximum, when a lot of toxics were on the team I just used the command /mute all. I bought skins for about 500 euros, the usual inhabitant of Silver. By logs it is clear that the person who played on this account constantly wrote that it was his smurf and he dont care but acc was 160++ lvl. and how can I prove that all this time I didn’t even played lol?
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