Who called from 9785580798

My mom keeps getting phone calls from this # and is being awakened by them.  How do I stop this?  She's a very frail 77 yr old woman.

I have the same problem, if you call the number back it's supposedly voice mail for Empire Maintenance in Bolton. They called me five times yesterday. Usually I hang up before they say anything, today I stayed on the line, a woman's voice came on the line, I asked if I could help her and she hung up. So I called my phone service provider Comcast and they informed me how to turn on call screening:
Dial:
*60
1 to turn the feature on
2 to add a number to be blocked
number to be blocked then # key
6 to exit the feature.

Apparently it takes 24 hours to go into effect and then the call should be blocked from getting through. We'll see.

Same problem. They call 5 times a day. They will say hello and then hang up!!!

I have been recieving calls from this number  a few times a day for the last month. When I answer there is no response then they hang up. My caller ID shows only Bolton, Ma

Thank you so much for this.  I'm going to try it tonight.  She received more phone calls from them today.