I DO NOT HAVE SPRINT, but this scammer called my number - left no message. I rarely answer names of numbers I don't recognize - just check them out on the web. BINGO! Another scammer.
My teenager has been getting calls from those same numbers since January 19th. It called today and so I answered this time; I said hello a couple of times, no reply, then there was a beep and then an automated voice that said goodbye.