There is no fix, get used to it and learn to spot those ratings when judging others for trades.
Figured as much, shitty that people like this can continue to abuse their privileges like this. Thanks for the input.
Don,t worry about it, he is super red trust, so his negative report is not counted toward your trust rating #... and if people look at your trust history, they will see the guy calling you a scammer is a super red trust, which means absolutely nothing.
I've had such users leave red feedbacks on my profile you can go check yourself, it did not prevent me from building trusts as you can see.