Sudden

I thought I had finished at the library, however the phone call meant that I had to come back to send an email. Some questions:
Why do people insist on phoning me when I struggle with phones? Why don't our government services have the facility to send a text message or an email?
I answered the phone call because I somehow felt I had to. It's a good thing I did, or else I wouldn't have any income. I didn't want to answer it though, even more so as I was standing in the street. The experience has left me feeling a bit odd.