Disconnected this call after the second ring (I do this for all numbers I do not recognize). I called the number shortly afterward and, as one of the commentors above noted, got a recorded message (in a phoney English accent) saying the number was temporarily unavailable and I should call back later....yeah, you bet I will, my [***].
I keep getting "political survey calls". After each I use call blocker so they can't get through, and it is great. However, it seems that I continually get more of the same calls just using a different number. That is ok, I can block as many as I want. Highly recommend call blocker. Not affiliated, just pleased with the service.
Just got a call, rang twice and hung up. I returned and it said "temporarily unavailable and to call back". This came in on a cell phone listed on do not call registry.
Received several calls from this number. I was unable to answer and no message was left. Also got the message in English (British version) that the number was unavailable and please call again later.