Does XLO / Argntum still exist

I have XLO speaker cables and interconnetcs.
I was looking at digital cables etc and decided to contact them direct.
Emails to them are returned and when I try to phone them I was not successful either.
Does anyone know what is going on?
XLO and Argentum were exhibiting at the California Audio Show held this past weekend. See numbers 5 & 93 in their exhibitors list: