CSG Senior Angular Developer interview questions

At first the scheduled interview after attending was rescheduled because the interviewer doesn't have stable internet connection. Because of this my 1 hour permission got wasted. Again in second rescheduled interview they did not joined then i contacted HR then she arranged interview. The interviewer did not asked for ID Card to capture but in the first time they asked me to provide. Interviewer asked regarding basic to advanced i have answered all the questions. He gave coding challenge even completed that round. After 45 minutes of interview he said HR will contact you. Within seconds they kept my Application status as No Longer Process this Application. They have wasted my time, if they hired someone else they should politely tell us instead of wasting time like this.