After the first classic introductory phone call I received a challenge to tackle, after a positive feedback a call with the HR person M.P. and the in house Data analyst is set up. The appointment comes and goes and no one shows up. I reach to the analyst with whom another date is picked, this time we manage to talk. After that, I get another couple of emails from the HR person who once said he would call me the day after, and the other time said that he would fetch me a feedback ASAP. Needless to say that it's all a waste of time and I never heard back