BT Group Senior API Developer interview questions

Pathetic interview,they called us f2f they made us to wait 2hrs,after that I went for interview,then interviewer was busy in chatting with someone,in 10min he asked two questions, when I was answering he was not listening and chatting with someone on phone and he told he is done with interview.BT is doing timepass by calling people f2f.i waited 2 hrs fr 10 min interview,it was for 1hr,he told he done with interview in 10min ,never ever go BT,worst ever in my life