I am curious as to what happened, too. On my recent visa application, it asked for my last visa number from a previous trip, which I don't have as it is in another passport not in my possession at the moment. I had the application number for a 2011 visa, which I entered, but not sure how important that information is to whether the application is approved or denied.
Does anyone know if the visa office works on the weekends? I applied 4pm Thursday Delhi time. It says 72 hours...is that 72 hours from that time frame or 72 business hours? Will I receive any sort of visa notification over the weekend?