When a person feels a high level of anxiety at having to use the telephone; a phobic response to making calls possibly due to social awkwardness.
Steve - "The boss told me to call our whole client list, but faced with all those people to phone I started to hyperventilate."
Jess - "Woah dude, you have a case of phonophobia big time."
2. I knew I had to call up my insurance company and complain, but I started dreading the awful hold music and my phonophobia got the better of me.