Xalted Information Systems Junior Java Developer interview questions

There are total 6 rounds of interviews(online), 1.Introduction telephonic round with some java basic questions 2. Technical round of 2 hours with 3 programming questions. 1. Producer Consumer program using thread(compulsory)2.Armstrong number3.Mirror image star pattern 3. Telephonic technical round. It was very simple. I had answered all the questions. 4. Managerial interview with director(on call) simple hr questions 5. HR interview(google meet) with senior hr.(ask about project) I have done with all of above rounds and all were good even Senior hr told me that You will have next round with M.D. But after that I did'nt get any reply from them. When I Called them They said You are rejected for some nonsense reason. If you are very serious about getting job don't go there they are wasting candidated time. For junior position(salary 10000) they were taking 6 round and after that they were saying that you are rejected and this happen to me 2 times with this same company