Hello, I have a set of Cable and Wireless cordless telephones (model number CWD2600) and they have an obsession with the green light on the top flashing at me.

There is an envelope in the display, which would say 'message' in my mind, but the answerphone has no messages, 1571 has no messages and there are no missed calls.

It has been doing this for a few days now and it is really annoying me

Please help