I was able to add on my daughter after an exhausting 2 weeks of calling.
This is what happened.
I called earlier today and I kept wondering why they kept saying 2 adults and 1 child. Something told me to call again and the CM said the same thing. NO WAY. I have 2 child and 2 adults. Well they said it looks like someone tried to readjust your reservation and they tried to credit $18.00 to you. For what?
I am trying to add one and not take away anything and besides no money was credited back to my account. Someone better fix it because I didn't cancel anything!

I guess I must have been raising my voice because the poor CM said its not my fault. I had to apologize profusely to her and explain how hard it is to get this reservation.
She asked me if I changed it myself on line and I said you can't even make this reservation on line so its someone on your end who made this error.
Well to get to the point, she put me on with a reservation Specialist

who not only put the 2nd child on but added the 3rd adult. Made my night.
Thanks for letting me vent.