Tech Mahindra interview questions

Horrible. I recieved mail saying interview is scheduled but, when I reached the venue I was shocked to know it was a walk in. Do they know the meaning of scheduled interview. We do not have whole time in world to go and wait for them. They just spoke to me for a min and said profile is not suitable. Why in the world did they schedule interview. They schedule interview without even looking at the profile??

walk in interview, long wait, very casual atmosphere etc