As soon as I registered, I started getting "No Caller ID" phone calls every few minutes from some unknown person speaking Chinese (which I don't speak). This is

As soon as I registered, I started getting "No Caller ID" phone calls every few minutes from some unknown person speaking Chinese (which I don't speak). This is pretty annoying, to say the least. There doesn't seem to be any way to deregister your phone number? So what now?