Is there anything I can do?

[Sakara]

For eight years I've had excellant service with web host usadomains, always had access to my dedicated server. Then enter Charter Cable, the ISP I am forced to use since July. Problem is Charter Cable keeps changing my IP address which my server then does not recognize and I lose valuable time contacting usadomains because I can't access my server. Here I add more information from usadomains:

The reason you cannot connect to your FTP server, is after all these years,
Charter Cable has put you on a new ip address that hasn't been setup with a
correct reverse dns. Below you will see that a nslookup on your IP address
of 97.80.33.119 returns the name of static.unknown.charter.com, however if
you do a reverse query to get the IP of the name, it results in a error. In
other words, static.unknown.charter.com doesn't resolve back to
97.80.33.119. This problem lies with Charter and not USA Domains, and would
need to be fixed on their end.

------------------------- IP resolves fine to name
---------------------------------
# nslookup 97.80.33.119
Server: localhost
Address: 10.10.100.12

Name: static.unknown.charter.com
Address: 97.80.33.119
------------------------- Name doesn't resolve to IP
-------------------------------
# nslookup static.unknown.charter.com
Server: localhost
Address: 10.10.100.12

*** localhost can't find static.unknown.charter.com: Non-existent
host/domain
#

Charter has not responded to this situation and shows no sign of doing so. Is there anything I can do using the tools of whatismyip to change my IP address back to the one my server recognizes.

I thank you in advance for any time you can give.
Sincerely,
Sakara