Same is happening to me. I have had no proper mail since early yesterday.
"Have you considered having your own domain emal address and avoid the same problem in the future?"
Domain email address is no answer, crash79.
Spam addressed to my primary address (the one only Zet knows) is getting through, but the address I publish - the one attached to my domain (hosted by Zet) - is bouncing back and making me look bad.
I know this because, using another account, I emailed a message to 'support' yesterday and copied it to my 'normal' zet address; it came straight back with a clear message that I was not only unavailable, but permanently and fatally so, and png into the bargain.
Re the message on their homepage, terryjl, it might have been there for months. They don't date their web pages. A lot are way out of date (look at the phone numbers).
In addition, it is galling to have the telephone support line tell you to go away and try later, and then hang up on you - at 10p a pop!
If any Zet people (and I know there are still some real people hanging in there, doing their best) are reading all this, please place a boot in Breathe's midriff for us.