Discuss Cmorris's answer to: Can you sue the department managerr of Wegman's for saying those mean things

The best course of action is to discuss your situation with an attorney. Most of them offer free initial consultations and should cost you nothing to find some answers.

Although what you have described seems like to fall under the "Americans with Disabilities Act", which covers how a person with a hearing impairment can file a lawsuit against the employer.

The most important part is if your manager treated you like that multiple times or this was just a one time incident?

"The law does not protect workers with disabilities (or any workers) from merely rude or uncivil conduct. To be actionable, conduct related to an employee's hearing disability must be perceived by the affected individual as abusive and must be sufficiently severe or pervasive that a reasonable person would perceive it as hostile and abusive."

At this page I think you'll find your answers:

http://www.eeoc.gov/facts/deafness.html

Once again, I'm not an attorney so do not take my answer for a fact.