I deal with it by warranty replacement if the controller is still within warranty or buying a new one. I just have accepted the fact that controllers are replaceable items in my life.
This is such a great reply filled with disappointment. I did play MW2 quite a bit. DMZ was fun. My wife and I played MP a lot too. I bought her the battle pass one time and she was able to get it again multiple times just from the coins obtained from completing it.