Who called from 6107699789

Answered phone no one spoke on other end for a good 10 seconds then hung up I called back and it said number was not in service

Missed this call several times, each at 8:58pm. No voice messages left and nothing on the other end when called the number.

Same thing. No answer.

I get a call from this number atleast 4 times per week.  No message left.   I've  called the number serveral times and it always sYs it's  not in serice.  If it's not in service how and why does it call me??

Look up call spoofing and see. The caller could put Donald Trump on your ID if they want. Masking numbers allows crooks to avoid detection.