Tosoh Field Service Engineer interview questions

After couple of interviews over the phone, I was invited for the face to face interview with HR manager, Hiring Manger and National Service Manager. The HR manager asked for my drivers license and Social Security number to go through the security check since they were going to provide corporate credit card and company car (it was very fishy) It went excellent and I was told by the recruiter that I was their favorite candidate. They checked my references and that increased their interest even more! Then they got dissappear! I sent couple of emails and called many times to find out what happened! I followed up with the recruiter and didn't hear back from him. That was waste of my one day PTO and lots of energy I spent during the interview. And I believe that they behaved really unprofessional.