What is the Infosys interview process?

I received a call from recruiter from Naukri and filled my details in Infosys portal. I was told the first round will be held last Friday but I got no communication. On Saturday they called again and said this week. On Monday again they called and said Wednesday. But I have not received any email communication regarding this. When do they send out an email with virtual meeting details? Is it on same day or one day in advance?