Success on the second try
Thanks for the reply. I actually went to the same support center two days later, and fortunately I was let in by a different people. The young lady who rejected my early finger printing was still there at the reception desk, but she did not review my case. The center is pretty vacant.
So if you are unlucky at first, don't give up, try other day or time.
The support center I went to is San Jose support center, on charcott.
Good luck to all!