I've received the refund. It's the right thing to do, but given the time spent on support and communication, I don't feel very thankfull for that. I hope that at least it will warn others.
For the Upwork team, here are few ideas
This "Talents location" service is offered as a single mouse click just before posting a job. It was very surprizing to realize that its SLA is 48 hours.
The charge should be somehow success based (now it's instant).
And I don't mean a random success where the hired freelancer happened to be one of a hundreds invited by the agent That success can be achieved even by a primitive bot. But because bots don't charge $15/h for nothing, this money can be used to make the bot actually smart. Given the amount of data you gather every day, there is enough statistics to build really smart "talent search" bots who will likely outperform even good human specialists. But this also requires a well defined success score that gives some weight also to the score given by clients.