It's anonymous call. The person who called actually knows you. Probably they want to stay anonymous because they didn't wanna deal with something in person.
this is an internet msg service, my bf used it to tell me to get on fb from out of the country.. he said he used an internet msg service to do it. Someone u know tricked u is all! LOL
received vulgar sexually explicit messages from this number. some stupid immature person doesnt know the ip address goes out with every message that is sent from any phone or computer, i took mine to the police station cant wait to see who this is.