I received a phone call from this number early morning and after that many different phone calls start coming in looks like from different states. I received about 30 different phone calls, which I tried to block one-by-one on my phone. But phone calls were still coming in, which made me register my number with the federal trade commission for not receiving a soliciting calls, which is (unfortunately) would get updated with the National do not call registry only in 31 days. I also (just now) called my provider (Sprint ) and ask them for help. Will update what happened after that at the later time:)