Well, basically, only Rollbit and Razer can. But since Razer has not been online for a while, and we don't know when will he come back online, I think the best approach will be to reach CG and get them to intervene. However, since your bets are sport-bet related, there is a huge chance they'll refuse to mediate. So maybe just mention about the multi-acc allegation and ask them to validate it, and not breaching the topic to your betting activity?