Talked with my regular mailman, a little while ago, and gave him all the information that i have in regards to my problem with the USPS.
He's going to see if his supervisor can pull any strings, and help me out with re opening my complaint, and or, trying to find the missing calipers.
I did send them a picture of what they look like, so maybe that might help out.
Who knows. I gotta keep trying.