I know from marketing that people should be considered different people in person at home, in person at work, in person at their client's, on the phone, on the web cam 1 on 1, on the cam with multiple people, in text messages. Further modification happens depending on who participate in the conversation.
The funniest example I know is a guy who will first call people then when they say NO in no uncertain terms and hang up on him he drives there and asks exactly the same thing. He frequently describes how both him and the prospect pretend the rude phone call never happened.
He one time needed 100 plants for a stage of a theater performance. On the phone the grower refused to rent them to him, he didn't want to name a price, just NO. In person he immediately agreed to do it for free.
