THIS IS TRUST ABUSE.
There's almost no such thing here, effectively anyone can leave anyone feedback. In your account settings you can change whose feedback you want to show up by default. It's a pretty primitive and crappy system, but for the most parts seems to work out well.
Anyway, the productive way to dealing with this would be to prove your claim true by signing proof of funds. It would go a long way to establishing credibility, and clear up any doubts about it. (And would function as good marketing). If you have reservations about doing it publicly, I'm sure you won't have any issue in having someone privately verify proof of funds. I know dooglus has done so for betking in the past.
