Retaliation and harassment must be connected to unlawful discrimination based on race, color, nationality, ancestry, religion, sex, sexual orientation, equal pay between sexes, age or disability. Your facts do not suggest any of these issues, so I see no case for retaliation or harassment.
Defamantion of character, however, is possible -- if the employer reported your alleged conduct to others in the organization, and the report of your conduct was not reasoanbly necessary to the business operation.
Proving this is a difficult task. Unless you can find a lawyer interested in your case, you will have an impossible time trying to satisfy a court that your claim is legitimate. This doesn't mean that your claim is a waste of time -- just that you will have to find the right lawyer, and that could mean shopping the case to quite a few attorneys.
Sometimes, the facts are just too difficult to prove -- which would leave you with the only option of suing in small claims court for $7,500 (the maximum allowed). That's better than a poke with a sharp stick -- as the saying goes. But, that's the only option if you can't find a lawyer who's interested enough to take the case.
Hope this helps.
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