you know, I think you are right, and also one of the reps mentioned that to me the other day. Up until a month or so ago support was adequate, now it seems some emails just disappear into a black hole.
If that is the case, they could start with white listing all their account holders email addresses.
But using email for support is getting more and more difficult, due to the flood of spam that automatically is sent to any published support address.
I have given up using email for my services, and instead use online support ticket systems. Not only does it eliminate the spam problem, it' also much simpler to follow up and track issues.
No matter what the case is, I'm very disappointed in the lack of response.