Well, er, ah...
Apparently a false alarm. I was calling the number I found in the yellow pages. Today looked at their web site, it showed a different number. Called it, got through.
As to the door locked, perhaps I was there earlier than I thought and ran into their lunch hour. Perhaps.
Anyway, "we regret this error and apologize for any inconvenience it may have caused" or whatever it is you say when you've screwed up.