Microsoft Senior Software Developer interview questions

The worst interviewing process, they contact me in LinkedIn, I respond that I was interested, they reply me with 10 questions on my inbox, so I answered them and later on the week they send me an invitation for the OTS (Online Technical Screening). I show up 5 minutes early and no one attended the meeting. I wait for an hour, and sent a couple of mails, and nothing happened. One week later they show up tellingbme that the position was closed for LATAM, that he could transfer me to a job position in other team that could hire someone from LATAM, and that he would send me the OTS next day. I'm still waiting, I sent emails but no response, a complete waste of time and the discouragement of being stood up