Why not just show up in person? I was the same as you over the phone. My speech therapist told me the best remedy for that was to just keep doing it and get over it. You wont be able to avoid the phone forever. Her exact words. I dismissed it at first saying we have apps and what not and the internet plus texting. But I was an idiot. An 18 year old idiot. I'm almost 24 now. Have to use the phone nearly daily now and ive gotten better at it. I still hate it but got to tough it out. Start off small. Call some stores and ask when they close. Then maybe once you have issues like credit card issues or billing issues with companies you can slowly progress.