Google IOS Engineer interview questions

This review is basically a complaint on the transparency. Recruiter reached out. I had mention that I can proceed only if Google sponsors my visa. They agreed. Had a technical phone screen first. It went well and was called for an on-site. The process was then handed over to another recruiter (which is normal). I scheduled my onsite dates with the new recruiter. One day before my onsite, they call me to tell that Google cannot sponsor the visa and that there was some miscommunication on their part. It sounded very sketchy and they wouldn't reveal any further information. Felt the entire process was unprofessional and it lacked transparency. Also, it's a shame that Google is able to do this visa process to stay competent.