Emails blocked and abuse_rbl@abuse-att.net unresponsive

We've added an additional dedicated IP address for sending emails and are having problems with this IP address only being blocked by AT&T email servers.  I was able to get our older IP address unblocked via this forum when we got no response from abuse_rbl@abuse-att.net'.  Please do not respond with, 'wait for a response from abuse_rbl@abuse-att.net' since it has been over 3 weeks and there has been no response.

Can @ATTBusinessForums or @ATTBusinessCare reach out to me for our newer IP address that is blocked and help get it unblocked?

Thank you, Mark.