I had a negative interview experience, very unprofessional and disrespectful with other's time. I applied on March online through Aurex Group (recruiting company). First, I had a phone screen with the recruiter, after that she ghosted me for two weeks. Later she invited me to a phone screen with the hiring manager at Xcel, which was an interview related to my background and machine learning, it was interesting. After that, I received an exam related to Financial Mathematics. The exam was exciting but demanding on time. I submitted it, and I was ghosted again for three weeks. On a Tuesday, the recruiter re-appeared and told me that I was invited to an onsite interview on Friday. I asked to be re-scheduled since I live out of the State, and I am currently working. We re-scheduled it; we were emailing about plane tickets and also they asked me to send copies of documents like driving license, diploma, work authorization before they send me the airplane tickets information. After I sent my documents, 3 days before the interview date, they ghosted me again and never heard again from them.