Clear case of Account getting boosted

Take a look at this. Hard stuck Bronze/Silver and suddenly, Gold 2 :D. From Flash on F to now D, and an increase in Winrate by playing mostly Trynda. Anyways, useless i report this account, RIOT won't do anything about it even if they say they'll investigate and so on, all just a lot of blabla. Thing is, i have this person in my friend list, so i'll know if they get punished or not and i'm 99% sure, no actions will be taken.
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