Kittycat I do feel for you and it sounds as though you don't have Cafcass as a support. The parenting course, I mentioned in much earler posts, is a standard thing now, they make you both do it. Just go, you can't refuse, it will not help you in any way, but at least they can't send you on it again.
As I said nefore, my Cafcass officer seemed to be well versed in children voting with their feet, and at 15 I'm not sure any court will want to impose their view. At 15 you cannot make a child see a parent they don't wnat to. Perhaps it's easier for that child to just say they have other plans, doing other things, studying: easier for dad to undrestand anyway.
You know this is about control, that's what I"m up against. I hoped that my exh would get fed up. I hoped he would jsut give up, but he's on legal aid so why would he?
Keep fighting, keep asking for reports, and when you get a cafacss officer you trust, insist that they work on your case.
To put it into perspective for you, my exh COULD have had contact with the boys this weekend at his mums (supervised), before the final heaing next week, but he refused. It's not about contact with the kids it's about control over you.