Can you not ask them to sit down and talk about making a plan? Could you bribe them with home made cake, or a glass of wine, or crack cocaine? I mean geesh, whats the deal... maybe you could get up and turn the tv off or something and stand in front of it and say, "we have to talk!"
Sorry, I am just not used to people that avoid communicating, it is just beyond me.
I don't mean to offend, I'm just getting as frustrated as you are now.