It's as simple as that, you patronize companies with good reputations and ignore scammers who come with a newbie account to defraud people here, most of them are already with lots of tags that ain't green so it would be easier to detect them even though one just newly got here. Also, it would be very foolish to disregard the signs, having a red tag or lots of reds is the first red flag everyone should take note of then ignoring messages I mean not giving potential customers replies is another red flag and anyone here who come across them but still decides to risk their wallets to those strange folks without good reputation here would have themselves to blame when they get scammed.
The only way to trust a company you have not had any dealings with is through the kind of reputation they have out there, this can be gotten mostly from reviews of satisfied customers who are willing to recommend the company to others, this is especially so for wallet recovery company since no one wants to hand over their wallets to complete strangers they can't trust and with scammers everywhere themselves days it is understandable that some people are weary about some of the companies online.