I have never had a problem with using the USPS, sometimes I will use their tracking system and it worked fine. If I was unable to track a package I would have gone to the Post Office where I mailed it and ask them to track it for me. You pay extra for that service and if I had a post office employee tell me something I wanted to insure had no value, I would ask to speak to a manager and find it in writing. It sounds to me that person should have been reported. You can always do it on line if you don't want to do it in person. Maybe a lot of that employee's packages go missing.