The problem is when you ASK a WAS to do something (ex: please be friendly) it won't happen.
You need to tell the WAS this is what I am doing. You can like it or not like, either way is fine by me but I will continue to do what is best for me and my children. Period.
You have lived outside of YOUR home for several months and it hasn't seemed to phase your W a bit. Why do you think you phoning her and asking her to work on things would change a thing?
I am not suggesting you be mean or cruel or make threats or anything like that. I also don't suggest you go barging through the door like a maniac. Just be firm about what you are doing and leave it at that.