My mobile has been ringing at least twice a day for the last month and when I look at the display it reads 'anonymous'. I ignored it for a couple of weeks but then started to worry it may be someone seriously trying to reach me. However, when I answer it, it starts to ring out. I've never let it ring enough to see who answers. I'm presuming it's one of those scams where by they charge you tens of pounds if you let it get to the answering stage. Anyone else had this? Is there any way I can stop the calls, they're driving me mad!