If you are suffering from social anxiety, please don't feel like I'm making fun of you. I, too, stopped ordering from a pizza place once, because the delivery driver was too talkative. I was really uncomfortable talking on the phone and went to great lengths to avoid unnecessary interactions with strangers.

I managed to pull myself out, simply by practising. I progressively stepped out of my comfort zone, just a little. Just a few small interactions with strangers, a few moments of self discipline, was all it took for me. I realise that there might be more severe cases, though. If you are really suffering from it and can't just pull yourself out, there's no shame in getting help.

Panel 1:
G and H are sitting on H's bed.
G: You know, you should really do something about that social anxiety of yours.
H: Oh, come on, it’s not that bad.
G: No? Tell me about your favorite Chinese place!
Panel 2:
Empty boxes of Chinese food litter the ground.
H: Oh, they're soooo good, I can’t get enough of their deep fried, dough covered, sweet, sour, spicy...
G: Aaaand, why do you not order there anymore?
Panel 3:
H: Last time I ordered there, the delivery driver asked me how I was doing.
G: q. e. d.