I would like to add to Riff's post (which was amazingly well put!).
Ayslyne, you have been betrayed in a way that no one should. From reading your signature it looks like you have had the wind knocked out of you more times than you can stand. I know how you feel, just kind of like a shell. I felt like this a few months ago. It was as if I didn't care what happened to me, what my husband did, etc. Kind of like a punching bag waiting to be hit again.
What I did was take a self inventory. I found out what I wanted from life, inclusive or exclusive of my husband. I needed to fill myself up again. Keeping busy was essential.
I had to realize that who I am is not defined by who my husband is; though he does play a part I can't let myself flounder because he is or was.
Mentally try to turn those triggers around. From some classes I took I remember a few things about traumatic experiences and how to cope. For example, sometimes victims of molestation may remember vividly that their attacker had blue eyes. From that point they may associate blue eyes with evil people, and to turn that trigger "off" they needed to re-associate the trigger with a pleasant one, like a good person they know who had blue eyes. This isn't true of all victims, but might work for you.
Like, you could re-associate the calls with positive experiences you have had on the phone with other people. Maybe your grandma called you every Sunday when you were little. Just learn to know that a phone call isn't always a bad thing.
This all might seem really stupid, but it has worked for me and I hope it can work for you.
Good luck, post often. Many hugs.