Verizon postmaster contact?

[Omar Thameen <omar @ clifford . inch . com>]

Anyone have contact info (pref. phone #) for Verizon mail server
issues?  They're blocking SMTP connections, presumably because of
the volume we're sending, and I can't get anyone to tell me anything
other than to send email to abuse@verizon.net.  I've emailed that
address, as well as postmaster@verizon.net, but have heard nothing.

Please respond privately if you don't want to put it in the archives.

Thanks,
Omar