Qualcomm interview questions

I received an email with a couple of schedule options for the interview. So I chose to go to the interview on the next day. Within one hour prior to the interview, I received an email request to re-schedule the interview for half an hour prior to our previous arrangement. Needless to say that I was neither expecting that nor had enough time/notice to make the appropriate changes. As soon as I arrived at the interview I was informed that the interview would last only 15 min. I felt rushed through and left with most of my questions unanswered. I had never been in a situation like that before. I was never contacted by the lady again. Very disorganized.