I'm so sorry you are having to go through this. I was so hoping that your experience would be much better than mine.
Keep calling them, every day, if you have to and document everything, date, time, person spoke to, etc.
As far as SS goes I had not problems filing on line for SSD. I suppose I am probably older than you, though. I am 54. I don't think there are age restrictions, though. Maybe you can call someone and they can walk you through it.
Hang in there. Just from my experience it is a long, bumpy road. So put your seat belt on.
If there is anything I can help you with just ask.