What has happened with you is unfortunate. Let us do the analysis of the event.
The incident is nothing but the reflection of the company's culture. The company appears to be following culture of bygone era. Gone were the days when job candidates were desperately looking for the job. Now it is the candidates' the market. Getting right skilled person is very difficult. Against this backdrop companies need to strive for the maintaining the brand image in the job market. However, the owners of the company are yet to have epiphany of the current job market scenario and they are following a culture that is out of sync with the 21st century.
Partially the problem is also with the interviewer. It appears that she has not been trained on interview handling skills. Job interview is not just asking question and testing the candidate's knowledge or skill but giving him/her complete feel of the environment that prevails in the company. This company could be from SME category. In the SMEs, many times employees are rewarded for the length of their stay and not necessarily because of their professionalism. Since these people earn trust of their "boss", they also try becoming de facto boss.
In the midst of the interview, two things you could have done. One is when she started asking questions about plans for getting married, you could have told, you were confident of doing value addition during your stay that would outweigh your absence. Therefore, this cannot be major concern as such.
Secondly, when she started negotiating about the salary, you could have told politely, let us defer this discussion for the future rounds. It is too early to discuss these things at this stage.
Lastly, about suing the senior manager who conducted your interview. I can understand that you are flared up because you have got short end of the stick. However, my suggestion is to ignore the incident and move on. Life is made up of good as well as bad events. Everything cannot be good and everything cannot be bad. As far litigation is concerned, you need to have sufficient evidence. Did you do audio recording of the interview? Without evidence, how will you proceed? Even with evidence also, this incident does not worth investing time and money in the litigation.
At best, you may write letter to the MD of the company for the unfair treatment that was meted out to you. However, please be professional in your writing. While you have blamed the interviewer for not possessing "affluent communication", your English also needs improvement. It is better to refer dictionary and verify the correct usage of the words.
All the best!
30th January 2017 From India, Bangalore