Landline Phone Troubleshooting

I'm attempting to port my ATT landline telephone to a different service provider. I have been on the phone back and forth between both providers for hours today. As it stands the service provider I am trying to port to says that you (AT&T) needs to send a "resolution required for incorrect accou

Want to block spam calls from reaching my traditional landline phone

How do I temporarily unhook AT&T landline from my ho