My mom died when I was 13 too. As a result I still have abandonment issues, or at least my therapist thinks so. As a result I feel really left out a lot and try extra hard to please people. It sounds like you have given him everything and kept nothing for yourself. He in turn gives you nothing.
I feel really hurt when that happens and get really depressed. You need to reach out to him of course, but maybe you need to also take care of yourself. I do not pretend to understand all you are feeling and can only speak from my experience. I am rooting for you.