Infosys Network Engineer interview questions

it was simple process. i have applied for the post online and took few days to schedule the interview. first round was technical and second was HR round, both completed on same day, received offer letter in 15 days

called for a brief phone interview. Was told to fill out application and will be sent a email to schedule interview. Never sent an email and I get a call at 8 am the next morning wounder why I wasn't in the web interview. I explained I was never sent a email confirming a time and date. They finally got me a email confirming the next day at 8 am I confirmed it and cleared my schedule for the next morning between 8 and 9. I got on the conference bridge at 7:45 am and waited. 8:30 rolled around and no one showed. No one would answer my phone calls or email requesting information on if the interview was still happening or if they was running late. I would have to say this was the most unprofessional company I have ever interviewed with.