since last 3 days all incoming calls on my htc wildfire are being shown as "unknown"...even the saved ones. Unlike regular unsaved callers there are no numbers being displayed,just "unknown". since no number is being shown i can't even call back or msg the caller. I have restarted the phone and even reset it(suggested by cus care). Nothing worked.since missed call function has become useless I've missed out on many important calls. I'm a mess. pleeeeeeeeeeeeease help.