Hi Mr. Stranger,
It's good that you are venting these emotional challenges, that is important when it comes to working through them so you can finally "let go". I think that when you vent about what happens when you call your parents it's important so you have a place where others can validate that when you reach out your hand, your parents only slap it and talk about themselves. Unfortunately there a too many that "do" have parents that are like that.
You have a right to your own life and your own happiness. If a parent doesn't say things to you to support that, then they don't really know how to be a "good" parent. A lot of people become parents and have no idea what good parenting is all about and it's certainly doesn't mean one has children in order to have these children parent them and wait on them. A lot depends on the generation one's parents are from too.
I am sorry that you are "hurt" whenever you try to connect with your parents.