As far as I recall, and my memory may be deceiving me, at least Ratimov and icopress have used their services and I would say that a few of those who wear the signature or have worn it in the past have also used Best Change.
I've used BestChange too, and posted in their topic several times. I like their service.
Have they been scammed?
I haven't. But that doesn't mean things can't be improved.
It doesn't add up to me that Best Change uses a system that allows large scale scamming and this has not resulted in massive negative feedbacks from DT or flags with sufficient support.
That's probably why they haven't been tagged yet (other than by TMAN). Let's keep it that way

Don't get me wrong, in everything else we agree: the feedback system needs to change, and linking to a "service" that freezes funds by requisting KYC but only provides an email address is a joke. A bad one.
It's no joke for OP, who lost 0.256
BTC.