What's odd about it, and do consider your location? Are you likely to take a call if India or Pakistan appears on your ID? They'll use something that perhaps gives them a good chance of getting their calls answered. Don't be surprised at anything these folks do or say. They have no regards for time, day, age, or anything else and they run 24/7 365. Calls coming at unreasonable hours have a chance at being from overseas, perhaps India, or Pakistan, where 11PM here is about 11AM there.