We're Joyent customers as well, and their support has always been great, so this is definitely surprising. You should get on the phone with them (they provide an emergency number). What kinds of machines are you running? Is it just one, or many? It shouldn't be necessary, but message me if you're still not getting through and I can ping some contacts.
No you don't, I asked via a support ticket two days ago for an estimate, I can't even get a response from the support team. S I am frustrated enough to post here