My company is not receiving support. Our account has been blocked, and our app is inaccessible. Users are writing us, and there's nothing we can do. Why? Because we need to upgrade our plan, but your site will not allow it. There's an internal server error. Furthermore, we're unable to update the credit card on our account. Can we please have someone help us out?

Looks like the case that you might want to ping someone, like @ nilan i.e.

I have... and he doesn't respond. Thanks though.