Transfer to full servers
Anet do not transfer people to full server by request. Have to wait for open space like all other people try to get to that server. That just the way it work for everyone.
Everyone exept some broadcaster right ?
Do you have prof they did get transfer? All you say is someone ask them if they got email from support. They may get same answer as you.
I suspect there was a misunderstanding. The full servers are currently locked while they let the population drop by itself. Once it drops far enough they plan to reset what they consider as full. It would make no sense for them to give away the ability to transfer to someone to hand out just because he makes some videos, not when they are letting the numbers drop. It defeats their plan and causes problems with issues of favoritism.
ANet may give it to you.