Dropbox contact info

I'm trying to get in touch with an account manager or the billing dept at dropbox.

We've had a former employee lock us out of a dropbox for business account.

I've had no luck getting anyone there to help at all. the only phone number I found was sales, and they had no idea how to contact any account managers or the billing dept.

The only response i've gotten via email are canned responses.

Anyone have any ideas?