Well, it depends on who the person is, I have a few people in my life like that, and I love them dearly, so, I wouldn't just walk away from them, but, sometimes you have to "love them from a distance"... if it is something that is effecting you and your personal well being, sperate yourself from that person and let them learn from their mistakes, and if that person is meant to be in your life, they will be... if not, its time to cut your losses and move on... If it isn't effecting you, do your best to help and if nothing works, the only person you can chage is you... OPTION C IS :
When the conversation starts going in a direction that you are displeased with, just pull out a pistol and wave it around, screaming jibberish... They'll get the idea...

what do you mean by phone adaptor? what is the website...