I got banned for somebody else charging back

Soooo since the support (german one) is not really helping me with this issue, I wanted to ask this publicly. In december, I got one or two skins and 50€ RP from a streamer on twitch called Musti1432, he was giving away stuff (RP, Gaming stuff, etc.) After a few months, he did not pay any of the things he gifted and many people lost the skins they got, appearently some even their Accounts due to the chargeback/not paying. (As long as I know somebody else got banned too.) Now my question would be: WHY in the hell is MY Account being suspended when HE gifted this stuff. Riot really be ashamed for this bullcrap. {{sticker:slayer-jinx-unamused}}
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