The majority of states are what is known as a "1-party consent", including ME. So …
You could sue the co-worker and the customer for defamation. Slander is spoken defamation. …
It is possible--and worth discussing with a personal injury attorney--but doubtful. The problem is …
What are they putting a restraining order out on you for? For telling everyone …
The problem with the waiver is that it might not hold up in court. …
Are you a lawyer?