KPMG Management Consultant interview questions

I interviewed for Management Consultant internship role. A lot of technical questions for the telephone interview. The interviewer appear to be impatient. The telephone interview last 20-30 mins. The whole process is very slow. Take months to proceed.

Online application via campus recruitment. Completed online test and shortlisted for an onsite interview. Approximate waiting time of 1 month between initial application and interview shortlist. Interviewed with an Associate Director. Interviewer mostly spoke about himself and his career. Extremely critical and somewhat rude in response to all that I said. Was provided an expected deadline to respond to a potential offer. However, 2 weeks past the deadline, no offer/rejection was given and follow-up emails have not been replied to. Would appreciate some degree of follow-up from the company.