Johnross I'm sorry your family are treating you like this, I know it hurts. My family have shunned me for twenty-five years. How am I dealing with it? Well like you I used to send my mother things. When my dad who was never a witness told me she had her purse stolen in a shop I posted her a new leather purse. No phone call and I found it in her things, unused, after she'd gone.
One thing that really hurt was that when my daughter was born I took her to see my parents and my mother acted as though she was just tolerating the visit for the sake of her unbelieving mate and his granddaughter.
Just before we left she picked my daughter up for the first time and brought her to our car. I put my arms out to my mother so I could put my daughter in her car seat and my mother was so desperate not to touch me she nearly dropped my baby on the drive. Her head would have smashed on the concrete.
After a while I stopped trying to phone my siblings, that's how I deal with it now. I wont accept their attitude that possibly I can phone them and maybe they will speak to me if they feel like it or they might put the phone down as has happened.
That is very wrong so I don't contact them now. It's hard but I refuse to let them abuse me and treat me as if I am evil. I wont play by their rules. In the real world if people repeatedly treat you badly you avoid them as toxic. As I now live in the real world that is what I do.
I hope you find a way to cope with your family. I suppose I would advise you to choose whom you love and find new 'family' who value you for who you are rather than just where you were born.