Docusign Lead Software Engineer interview questions

I never posted an interview experience before but as I continue to search for my next job I started to feel that I should also contribute because I have benefitted from Glassdoor reviews as well. So here it is, I just had my technical phone screen at DocuSign. It was not a good experience at all. The problem was related to string manipulation, not a typical leetcode problem but not hard as well. I asked clarifying question as what the parameters are. Before even starting the solution interviewer asked to think bigger where it can be used. Totally understandable, So i gave him examples maybe not the ones he was looking for. After that he started to talk in a degrading way, like you don't know this and you are applying for a lead role. Then he asked what the specs of the function will look like, again totally valid question. I told him the specs but he kept talking that I am not understanding and why have I applied for lead role. After sometime, he told the same specs as what I mentioned earlier. Maybe I was not able to communicate to him better but that still doesn't give him the right to bring down my confidence. Aren't interviewers suppose to work with you. I have been on the other side of the table as well multiple times, never in my mind I thought to show the interviewee that I am superior to them which I felt that the interviewer was trying to do in my case. Anyway, After that I politely told him that I don't think the interview is going in the direction either one of us wants it to and don't wanna waste his or my time and ended the interview early.