Got a call to go for a face to face interview at 3pm. I reached early and hang around the area but got a call at 2.30pm that they will change to phone interview. Waited till 3pm for the call but got a message that he is busy and to change to 3.30pm. Waited till 3.45pm... Waste of time. I couldn't answer the interview question and was curious to learn but the interviewer said he doesnt remember the full list of answer as well (lol)