Ryan, I'm not an AA person, but I do know that there are very few situations in which you can control the outcome. These people don't want to speak with you right now, and maybe they never will, and that's up to them. It's not up to you.
I think that making amends is not something you do to relieve your guilt.
You could try sending them a letter, but maybe this amends will be something that you do privately because that's all you can do.