I can relate to having trouble paying attention to long conversations. Unfortunately, my husband always has to draw out any thing he talks about. Drives me crazy. If I'm in a really bad mood I do have to tell him either get to the point or shut up. If I'm in a fairly good mood I just let him ramble and tune him out.

sorry you are having anxiety regarding talking on the phone. I don't have anxiety but sometimes just don't want to talk to anyone.

Have you seen a counselor? that might help with getting control of your anxiety.
Hope it gets better.
Gayle