You can do that once, at best. Most of them have a phone system which counts the minutes and you get prorated. The people paying the money aren't idiots. They'l

You can do that once, at best. Most of them have a phone system which counts the minutes and you get prorated. The people paying the money aren't idiots. They'll cut you off after 10 minutes if it seems like you are full of it. Then the relevant expert network never calls you again. The other side (the people that pay) do reviews etc. "Mr X appears incompetent".