I did manage to get a live person yesterday...who, of course, said that's not his dept. He switched me to the standard number for collections. i just hung up.
I sent the payment to the CA address, not the Dallas TX one on the payment statement...because that is what it said to do on the mod paperwork. I also sent a copy of the mod paperwork highlighting the new payment amount.
Just had an idea! I will call Juanice at the President's office today and have her see what is going on....