It sounds like this was a question for me, but it looks like a reply to a different comment. I actually never take calls, especially in the middle of the night. :) Sometimes, I'll email customers and ask if they'd like to chat on the phone about their ideas, but phone support isn't realistic for us.

I do respond to emails if it seems like the customer could really benefit from a response, and even sometimes when they aren't looking for a response. Sometimes, if it can wait, I'll go back to sleep and handle it first things in the morning.