My two cents. The office gal who got fired; She most likely lost/messed up the receipts, so she was fired. The local can't hand over the receipts because said office gal friend'd it all up.
Getting all of the bank statements might be possible but difficult. Remember we are talking about 3 years worth for every card.
Getting copies of the receipts that could be three years old from the actual vendors (restaurants, gas stations, hotels etc..) IMPOSSIBLE. If you don't think so go and ask your local gas station for a copy of the receipt for that time you filled your tank up three years ago.
So, AM not wasting anyone's time on the union's dime trying to get the old receipts perfectly reasonable.
AM telling the IRB if you want them go and get them yourself. (Good luck on that) perfectly reasonable.
The gal friend'd up. To fix it they fired her and now it's time to move on.
You can't hand over what you don't have and you can't go get them if the vendors won't/ can't get them for you.
Regarding the fired gal claiming harassment. Sounds like AM rebuffed her advances so she friend'd up the receipts on purpose.
Then cried to the IRB.
OP, Evil, real brown, silent bang and the rest of their tdu butt buddies need to stfu.