You may need to contact USPS, you can visit the website at: https://www.usps.com
To contact them by phone call: 1-877-747-6249
Common reasons to contact USPS:
You need to track a shipment that is missing in transit.
Forward a shipment to a new address.
You need to file a claim by phone.
You need to hold the package at USPS for pickup.
Address correction
International questions
Package containing documents has been delivered but the receiver did not receive them.
You need the shipment returned to you.