I just got a call from this number. I now research unrecognized numbers when they show up on my phone. I didn't bother to call back. I was afraid they may have caller recognition software and end up harassing me even more.
My number has been listed with the national 'do-not-call' registry for more than a year.
Have been receiving daily or 2x daily calls from this number. I've answered, gotten a recorded message saying it's not a sales call, and they're "trying to reach 'navrtnaigl ishene' (seriously unintelligible name)and if you are not that person, to press 3. Don't bother - it doesn't work - I've tried staying on the line to get a real person but that doesn't happen either. Instead I just keep getting calls from this number. Can't return it - just dead air.