Who called from 3018581204

I keep getting calls form this number asking for someone with the same name but I don't know what it is all about. They won't tell me who they are or what it is all about. Does anyone know who thy are?

Someone keeps calling my business phone looking for someone but will not tell me who they are or what it is all about. Does anyone know who they are?

this is a third party collection agency.

They left a message for someone with a similar name to call about a debt. When I called the toll-free number to have my number removed from the list, the RUDEST person yelled at me and didn't even try to resolve the issue  I have had to send a letter to this company, as there is no email contact.