i'm sorry but i completely disagree. he could be trying to be helpful!

if i'm trying to get hold of someone who's rather busy and the matter isn't urgent, then giving them your number and them calling you emans that they can speak to you at their convenience. That way they dont have to ring if theyre busy.,and if they get 10mins spare they can call me. I can see your point about phonebills, but i dont really ever consider things like that.

ps your phone's ringing, its me on the other end