Tech Mahindra Technical Support interview questions

Terrible experience..worst company ever. I applied off campus and I got a call from Miss Sony Rawat yesterday for the interview at today till 11 am. I somehow managed to come at this short notice of time from a very far place to noida. When I reached at the office she said that we can't take your interview because you don't have your 8th sem marksheet and you can go home. Like literally?? Is it a joke or what? I came from this far and you should have taken this confirmation before scheduling the interview..it is so careless.. i highly recommend don't go for this company this is a waste of time.