OP, I'm sorry you did not have the birth experience you were hoping for! I have not done Hypnobabies so I won't comment on that specific program, but I wanted to add my experience with a different hypnobirthing technique in case you could find that your training did benefit you in some important ways that you could feel good about and possibly use again in a subsequent birth.
I used the HypBirth home study course for my first birth and sort of reviewed it for my second. What I say to people about hypnosis techniques is that there are three levels. One: you learn affirmations and reach a point where you truly BELIEVE that birth is normal, natural, and something you were designed to do. Two: you learn some great relaxation techniques that are effective up until about transition. Three: you actually learn to hypnotize yourself and reach a place where you feel no pain throughout the entire birth process and may even deliver your baby without really pushing.
I reached level two and it was a great experience. Even though I did not make it all the way to full hypnosis, I did reach 8cm with hardly any pain. After about 8cm (during transition) my relaxation skills were no longer effective. I used water, changing positions, and low moaning mantras to get me through the rest. But I believe that the affirmations really put my head in a good place and that the relaxation techniques helped me enjoy the vast majority of my long 20 hour labor.