The phone number is actually a 11 digit number (862-824-5225-3) and comes in as "unavailable" on my cell phone. The calls came today at 10:12am, 10:28am, 10:36am, 10:46am and 10:53am. Persistent little buggers!! I am able on my cell phone to reject all "unavaliable" numbers coming in, and only noticed it while on my phone that a popup showed up on my screen that a call was being rejected. Another one just now at 11:08am and 11:11am. Egad, how do we get these pests to stop!!
I saved the 11-digit number in my contact s as Hacker 1, then I dropped the leading 8 and saved the 10-digit number as Hacker2, then I blocked each Contact. So far, so good.