I am sorry to hear of your dilemma. I realize how frustrating this is for you and I hope to provide you information which is accurate and useful, even though it may not be the news you were hoping to get.
If you are asking if you have a claim for hostile work environment based upon the manager calling you a name, then answer is no.
Harassment must be viewed in its totality. Mere discourtesy, rudeness or lack of sensitivity should not be confused with harassment. The harassing behavior must be sufficiently severe or pervasive so as to alter the conditions of employment and create an abusive working environment. The more severe the conduct, the less pervasive it must be. The required showing of severity varies inversely with the frequency of the conduct.
A single incident, simple teasing, off-hand comments or isolated instances of offensive sexual conduct or remarks generally will not be sufficient to create a hostile work environment. A hostile environment claim generally requires a showing of a pattern of offensive conduct. However, a single severe incident of harassment can be a violation of the law, particularly when the harassment is physical or quid pro quo.
So, it is unlikely there is a legal claim to be filed for this.