Hopefully there is a Telecom admin reading this (I don't want to sit on hold for ages to *123),
I loaded up TWorld and its showing me details under "Your Telecom" of someone else's mobile number incl unbilled activity, texts, free mins and data use and numbers called recently.
I've power cycled the phone then loaded up TWorld again, it showed the correct details this time.
But just concerned if this is not an isolated issue then there could be a privacy breakdown. Sorry I didn't note the incorrect number.