I know, it's really hard when parents don't seem to "get it". But... even if they HAD, the outcome might not have been much different. Lots of parents on this board can tell you all kinds of stories about no help, or worse, the wrong "help". I've been on both sides of this kind of situation. There are NO easy answers, and no guaranteed outcomes.
The best you can do is to get help for you - find a good therapist, work this through. You need to deal with these feelings because they affect YOU. The impact on them and your relationship with them, is completely secondary.