I have an irrational fear of texting, video chatting and meeting people. 
Whenever someone sends me a text or calls me suddenly, my instinctive reaction is to put my phone on silent and chuck it as far away from me as possible. As far as i'm sure, i think I've been like this since i was a child( I'm 21 now). I dont know why i get so anxious when these things occur and it's so bad that i can literally hear heart palpitations in my ear. And it gets more ridiculous when the person texting or calling is an immediate family member or close friend. 
Something similar happens when i have to meet family and friends irl. As soon as I'm invited, my mind immediately starts thinking of various excuses i could use to bail. And sometimes i fail to run away especially when the person inviting me is head strong and persistent, because of which i end up going to that particular event. And weirdly, more often than not, i enjoy being there. So why the heck do i keep getting anxious and try to run away each time this situation pops up, when i end up actually enjoying my time there?
My social anxiety is so irrational and i just cannot understand what the heck is up with it.