First of all, I highly doubt that a gig with overly positive rating has managed to fake each and every one of those ratings. Which brings me to the conclusion that the gig has had a lot of great experiences with all the feedback serving as indisputable proof. So that means you either had bad luck (like wrong timing, or maybe even wrong moment in the seller’s life), or there’s something you left out that made it impossible for the buyer to complete the order (you might have had invalid expectations that didn’t match with their gig, you might have used behavior that the seller deemed as improper, only you and them know…)
I’ve had thousands of great experiences, but very rarely I get a buyer who forces me to turn the experience into a bad one because of their expectations, maybe their behavior or something else, and when they try to leave bad feedback it’s obvious that the problem was not on my side (the seller), but rather on the buyer’s side - so I tend to think like this: “if thousands of people were satisfied by a service, but one of them isn’t, then the problem may likely not be coming from the seller’s side”, assuming all other unforeseen factors have been ruled out.
Unless, of course, in your case the seller had perfectly valid reasons to refuse to complete the order (I’ve had buyers who I’ve turned down because of my impossibility to deliver their orders due to various unforeseen real life factors that prevented me from doing so, as well as the inability to fulfill a buyer’s expectations when those expectations didn’t match with my gig!)
More so, just like in real life situations, a seller is entitled to refuse a client if deemed appropriate. And because of this, the experience of a a seller refusing a client should not be rated, otherwise it would be misused and abused in all imaginable and unimaginable ways, not to mention that this doesn’t happen in real life either (if I want a service but the provider refuses me, I am not able to rate them as I’ve never been their client in the first place)