Seems impossible to Whitelist IP/domain

I have been trying for several days to Whitelist emails from my organization's domain, which appears to be blocked from a recent external IP change. 

I have submitted the form a few times and appear to get a "canned response" a short time after. I also tried to get help through Verizon phone support and was on  with the rep who didnt seem to understand  for well over an hour before I got disconnected. 

Any contact/support information would be greatly appreciated. I work for a healthacare organization which needs to be able to email external staff and patients which use addresses.

Re: Seems impossible to Whitelist IP/domain

Hi cecclest,

Your issue has been escalated to a Verizon agent. Before the agent can begin assisting you, they will need to collect further information from you. Please go to your profile page for the forum and look at the top of the middle column where you will find an area titled "My Support Cases". You can reach your profile page by clicking on your name beside your post, or at the top left of this page underneath the title of the board.

Under "My Support Cases" you will find a link to the private board where you and the agent may exchange information. The title of your post is the link. This should be checked on a frequent basis, as the agent may be waiting for information from you before they can proceed with any actions. To ensure you know when they have responded to you, at the top of your support case there is a drop down menu for support case options. Open that and choose "subscribe". Please keep all correspondence regarding your issue in the private support portal.