You need to stop talking about your relationship with her. You push her away more with that.
If you called her for another reason, you should have told her you had to go after you were done talking about that reason. If she does initiate conversation about the R, listen and validate, instead of having her "really listening" to you. You should be the one listening to her to hear her complaints and if they are valid, see what changes you could possibly make....she left you, you are the one trying to get her back with showing a different you. .
You shouldn't be snooping by looking at her phone calls and confronting her about an "affair". As you see, doing that just made her want to distance from you more by wanting you off of the family phone plan. Her finding you you're snooping, broke down trust even further.
When she found out you had friends over, and said "you're not to busy to have friends over"..... your response should have been different instead of the snarky one you gave, that just made her more angry. Your response could have been "Yes, I do have friends over, that is why I said I am busy. If you really want me off of the family phone plan maybe that may be for the best, we can discuss it further later"
me: 30 H:30 tgthr:7 m:4 no kids 5 counseling sessions initiated by H as a LR: Oct 2012 long distance marriage b/c of work since Nov 2012 official BD: July 2013 nothing filed 1/1/14 I dropped the rope