It is so irritating when you got a call from numbers that you don't recognized and don't even leave a messages. This is what usually happened to me and my husband, he too receive calls that are only four digits and so annoying. I have found this site Annoying Callers.com where you can share and find information about the annoying number that you receive, or harassment calls from telemarketers who can't understand. If you want to know about the number that calls you often or if you get annoying calls try look for information at Annoying Callers.com, you can also post a messages at Annoying Callers.com and find information about your annoying caller.