Y.M.
I have used the "I will not speak to you unless you ask in an appropriate way" the trick to that is not to respond at all, look away and walk away. Usually the kids are so shocked that it sticks if used consistently. Also getting into an argument is going to escalate things. It might not apply in all situations, but it has worked for me.
Has he always had anger issues or did that just recently develop? If it seems like he looses control, even though he is trying, you might want to bring this up to a pediatrician.
(concerning early puberty or hormonal issues)