EXL Service Sr. Business Analyst interview questions

Went to attend walkin interview for the post of Senior Business Analyst in EXL on Dec 14th, 2019. I was not even allowed to attend the interview giving a reason that they need more experience in Tableau. Nowhere in the JD it was mentioned about tableau or SQL experience. In fact my experience is crisp and clear in my resume. I wonder who sends emails about these interviews when they have their own specifications to even send for the interview. Atleast for the sake of candidate travelling that far just for an interview, they should give a chance to attend at least one round to prove oneself. Interviewer taking technical round and rejecting is ok thing but people sending the candidates inside themselves deciding and not letting candidates to attend a single round is really unexpected. Time is valuable for everyone. Doing such things is just a time waste for both candidates as well as the interviewers. First and worst experience in EXL. Embarassing day! People sending out emails make sure whom you should send after properly reading the resumes of candidates.