If the idea of picking up the phone and interacting with people you don’t know over the phone is too much for you, there’s still hope. Google knows there are people like you and they are testing a new feature in Google Search that will allow you to contact businesses over Hangouts.
This will show when a business you’ve searched for is available for chat or not via a card “Chat” underneath the contact information. Selecting this will make the familiar Hangouts chat appear and then you can do your business.
The new feature in under testing and thus in its experimental phase so you will get an error if you try it now.
As we evolve to use our phones less and less for actual voice calls Google is going through the motions of picking up where everyone else doesn’t see the opportunity.