This is Public Outreach, a call centre for nonprofit organizations.  They are often following-up on previous interactions, for example if you gave your number to someone at a booth with Plan, or Doctors Without Borders.

I get called 3 times a week by this moth******er.

I received a call, this time from UNICEF -- i had also asked them to follow up with me, but I didn't realize that the inbound number was connected to so many other causes.  I didn't realize charities farm out their outreach calling. Don't know whether to consider this disturbing or efficient.

same here, just got a call - no message.

Hi, they are from the "because I'm a girl" campaign.When I got asked by these people on the street I wasn't able to sign up to anything at the time, so they took my number and I said they could call me back in August.Im not complaining that they called me, because I asked them to.I don;t know if anyone above is having 'cold calling' problems with them.