I’ve had phone anxiety for as long as I can remember. Even as a kid my heart would race if I had to call someone. Didn’t matter who. Didn’t matter for what. I’d rehearse what I had to say and sometimes I’d even write it down, but I’d still fumble. 

These days it's better, but sometimes I regress to my childhood as to say "I don't want to call this person, mum!" :/