Have had this happen a few times. When my phone rings my caller display is displaying my own number. i did not answer this incase its a dodgy scam. Has anyone got any ideas what it could be. Thanks.
Do you have BT's 1571 answer service? If so, it could just be them letting you know that there is a message waiting. Also, we had a spate of calls apparently from our own number, which turned out to be voice texts from a so called 'friend'. Don't know how or why it happens though and you may be just as well ignoring them.
These kinds of calls are usually from axe murderers calling from the extension in the bedroom. You will find they happen mostly when their is a teenage girl baby sitting.
Get out of the house quick, and DON'T LOOK BEHIND YOU!