The funny story continues :D
A senior technicinan called me today to ask if I could call the Ispot service and ask them whether they received a request for service (to send my display to Czech Republic).
I called Ispot, but Ispot didn't now anything about this and they asked me where (what email) it was sent.
They asked me to call Apple and ask about this. I called Apple again (30 minutes on line) and no one could help me because I was redirected to another senior technician that didn't know what his colleague did.
Then, Ispot wrote me an email that they eventually received a request and they are sending my display to Czech Republic (the repair center is there). So after 22 days my display finally to be sent (they promised to send it tomorrow) to repair center. Hurray - Studio Display breathtaking experience.
My plan is to wait for the diagnosis and when it comes back I'll probably sell it and buy something from Dell, where the displays are repaired on site (at your home) the next business day.