I just got off the phone with the OP Service Center (your approximate wiat time is 37 minutes......)

I sent in my Amtrak receipt for an Acela trip from New York to Boston TWICE and I keep getting back a form letter asking for my original boarding pass. HELLO? anybody ever ridden a train.... there IS no boarding pass. You have a TICKET and that's it!

I guess there mode is just stonewall and 85% of people just give up.