I am so sorry that you are having a hard time, but I think the anger is very much part of the letting go process.
I actually changed my cell number so XABF could no longer contact me. I still struggle with the fact there is NC but I feel so much better about myself without the stress. I recall last week you were also feeling good, especially on vacation. I have had a week of NC thus far and it is getting better ever day. My thoughts are with you