Sportradar System developer interview questions

I was contacted by a headhunter and then passed on to the HR. We then had a interview with HR, and then within a couple of days I did the coding challenge they sent me. The next step would be have a technical interview, and we even had a time set up For that. But the next day the headhunter, who contacted me first, told me the roles are not available anymore. End of the story. The guys have no respect to other people’s time and efforts, neither have they some dignity to properly communicate about failures in their process.