Tata Consultancy Services Software Engineer - Front End interview questions

There were 3 rounds as part of the interview process: 2 technical coding round and 1 managerial round. I have around 6-6.5 years of experience in FE development and I was really surprised when I was asked really entry level questions such as what is specificity in CSS, type conversions, etc. What struck me most was the attitude of the interviewers. The interviewers were really unresponsive to the query I asked towards the end of the interview round. They were really rude and didn't even bother to properly introduce themselves at the start. They sounded annoyed when I asked them to repeat any question or asked for clarification which was really unbecoming of them. Even the recruiter was highly unprofessional in setting up interviews. They didn't bother to check up on my availability before scheduling any round.