They're a telemarketer. If you call their number, they'll first ask if you're returning their call, then proceed to try and sell you something. Obviously a scam, and I blocked the number immediately.
I get half a dozen calls a day from this number at all times of day. I have repeatedily answered the call and said to stop calling and then there is silence on the other end and i hang up. i have responded via text with 1st, 2nd & 3rd notice to stop calling and the calls continue. When you call the number back it answers & gives a males voice that sounds automated that just says "Are you there?"
Ignore the number entirely, also shutting down your answering machine in the process. They call and keep calling those who answer. Stay away from it, and refrain from returning communication. You just as well talk in Pig Latin telling them to stop calling you, no such saying exists in telecrooks' world.