Who called from 6172527634

Received call.  Didn't answer because I didn't recognize the number.  No message left,  This happens about once every 2 weeks.

19 phone calls and counting, in just under 6 hours. The first one I told them we already have solar panels please stop calling. The second one I asked her to remove my number from their list. Now they just call and not say anything. This is extremely irritating, and harassing.