(1) This section applies if a person has been paid an amount of pharmaceutical supplement under Part 4 that should not have been paid.
(2) The amount is recoverable, in a court of competent jurisdiction, as a debt due to the Commonwealth from:
(a) the person; or
(b) the estate of that person.
(3) The amount may be deducted from an amount that is payable to the person under this Act.