Had 3 interviews really close to each other as they wanted it to go quickly (only positive thing). After the last interview they told me that I would have received an answer the following week. After 2 weeks, I still didn't hear anything from them so I tried to follow-up with first sending an email to the two people I had met during the last interview and then by calling them but heard nothing. A few days later they sent a very generic rejection with no specific reason. When I asked for a feedback, they also completely ignored me (this was more than 2 months ago). Extremely unprofessional.