Orange interview questions

They called you in their office for all rounds. After waiting for 90 minutes HR came and ask for an online test. Test was pretty easy. Few MCQ and 2 coding question. Then again I have to wait for 3 hours to get my test checked. After clearing this they ask me for Face to Face. In face to face interviewer didn't know the base concept himself and was confused. After 20 mins he said he is done. I came back and did verified that my answer was correct and interviewer didn't know the answer. I mailed HR regarding the same and ask them to check the sheet in which interviewer wrote his question and my answer. They never came back. Pathetic process.