Received this recorded message - they are calling at least 2 to 3 times a week;  Says they are calling 'on behalf of my former school' and that they are here to help and ask to call an 877- number.

Called while we were out. No message left. Same area code as us, but still suspicious. Called back and got a recording about some charity [no name]. At least there was an option to be added to their "Do Not Call" list. They did add that charities are exempt form this list.