Angelo,
They just did.
I sent a note to them on the 22nd and a reply was waiting for me when I checked my email this morning (the 26th).
Considering that there was a weekend in between those two dates, that means that I got a response on the second work day after I sent my note. That's pretty reasonable, so since you still can't get an answer from them, you really have to think that there's some email spam blocking going on that may not be obvious.

By the way, I sent my note to their "info@" address.

Highflight