I don't understand why TMNT is in arrears if there's money in the account..perhaps he needs to confirm with ANZ the account details from where they're meant to be withdrawing?
Which suburb does he live in usually? Pick a BSB and ask the bank...they can't provide you with the BSB but if you said 'I want to confirm this BSB and Account number' they can most certainly say yes/no: http://bsbfinder.com.au/state.php?state=NSW