I had texts from this number that were less than nice as well. After some research I found it is a free texting from the internet service. Anybody can use it for free for any reason and this is just one of the numbers that comes up. It turned out it was my Ex and she was mad because I was seeing a new girl. I dumped her cause she was in our bed with some other guy and I caught her and now two months later she is mad because I'm talking to a nice girl. Anyhow, moral of the story is check around who may be mad at you for what ever reason no matter how dumb. They have to know your number and what to say so they could be closer than you think.