I had one phone interview which essentially is HR screening. The interview itself was good but the communication around it was really bad. During the interview, I was told on phone that I have made through the 2nd round (which I found a bit strange on how quickly they made up their mind). They said they will get in touch with the details right away. But, full FIVE weeks later, I still haven't heard from them, even after I followed up with two emails, they never came back to my email - I found this to be extremely unprofessional. I spent lots of hours to prepare for the interview but they could not even spare two minutes to write me back. This possibly reflects a huge lack of communication and in that case, I may have dodged a huge bullet. A waste of time and effort.