Fred's Myth
Nonhyphenated American
Boy are you uninformed (diplomatically means ignorant).Do yourself a favor------go to her first. DO NOT go over head, especially if she is a volatile as you say she is. If she blows you off then by all means go to her boss.
Is there any way that you can discreetly use your cellphone to record the noise?
Use of any recording device on FedEx property is subject to immediate termination.
Great advice, Einstein.