I can sympathize, and I, too would file that complaint....don't do it on line...go to the PO take the mangled certificate and file the report with a person --- make sure it is a breathing person.
I have been doing swaps of cards etc through the mail for years. All of the sudden in January, mailed large envelopes started being stuffed, crammed, lodged in my slot. These were other people's cards and hard work and money being sent to me to swap with other swappers. RUINED. How do you tell someone their art work is gone due to the PO? Likewise other swappers were finding things smashed to bits also. We vowed we would take our things to the PO and complain and that we did. Haven't heard anything yet, but the mere fact that we did something helped our egos a little.
Now I have an old metal milk carton for the Po man to put my things in.....not legal...but I don't care.
You worked hard for that diploma, you deserve to have one that you can hang on the wall that doesn't look like the dog ate it first. Ask the postmaster to call the school and request a new one, since it was their fault it is mangled.
I am sorry, it shouldn't come like that!
Cathy J
It's never too late to get it right.