I've recieved calls from number as well, but they don't have voice mail set up and won't answer the call. Your right, they need to get a lif of their own and leave mine alone.
I keep getting several texts, like 6-10, from this number all at once saying things like, "Sup sexy" & "lemme love u". I really don't appreciate them blowing up my phone and neither does my husband! When I try to call or ask who it is there is no reply!