Oh, Tracy, I'm so deeply sorry! My heart goes out to you! Estranged from both your son and daughter and 3 GC! I can't even imagine how painful that must be!
I would think twice - or more - before going to court. A lot depends on where the children live. You need to check out the laws in Duba or wherever. I take it you're talking about visitation, not custody, but sorry to say, you may not even stand a chance for such court-ordered visits. Please don't spend time and money on this, unless you know for sure, there's at least a chance for you to win something.
But even if there is, that doesn't mean you'll be successful. Don't forget, the parents will get their day in court, too, and who knows what they will say? And if they're angry that you took them to court, it could make things worse. Are you willing to take that risk?
I would also be careful about getting a friend or anyone else involved. That could seriously backfire. The parents might just get angrier because you discussed this with someone else. Or they might convince the other person that they're right and then you lose a support person.
It must be frustrating, I know, to feel as if there's nothing you can do but wait. But, for now, I think that's the best idea. Wait, think about how you might repair the damaged relationships, hope that their hearts may soften and take time to mull over and weigh your options. Please be patient. (((Hugs!))