reverse phone directory

There has been an annoying call since before I got back here in USA. My husband have told me about that when I was taking vacation in the Philippines. Now, I can hear it everytime and see "unknown or unavailable number that has been calling every morning, noon and night time. We don't answer and don't call it back because we don't know where it is come from. So the connection here upstairs is unplugged by my husband so he can't hear the ring anymore. We both have been wondering where it is come from, but we just don't know how to trace it. Just now, upon searching through the net I have found a great tool on how to find them. It is the reverse phone directory from callerbase.com. To look up owner's name and address by searching their city, state, line type, phone carrier, since their number is appearing on phone bill. Now, they will be caught in no time. So if you are also out there who have been annoyed by unwanted callers, search through them now at callerbase.com