Netlink interview questions

Unethical and Unprofessional - Guess you might have understood from the first two words. Firstly, I got a call from the HR for Bhopal location and I was interested I thought to go for the interview though I had offers in my hand. At some point during initial discuss I got the uncertainty about the ECTC as I had good offer from other company but I told her that I'm open for the discussion and she was also fine with it. First telephonic round was conducted which was taken by someone who is not part of the company ( As per my research) and he was polite and good person. Secondly they send me a case study and wanted me to provide mock ups, wire frame, assumptions , user stories and suggestions which was beautifully done and submitted Thirdly Skype - Arghh! get to my nerves as this was waste of time From here onward ----------> Long pause as if nobody exists :P Now I assume they do this with everyone and present our assignment to their clients. HR's response is totally unethical and unprofessional as after multiple follow ups for the feedback she did not responded and I got the idea that they cannot afford me. Feedback to Company - If your time is not valuable then please don't think we have leisure time to entertain your stupidity and pass our time for foolish interviews.