Where a person:
(a) made an election under section 21, 53, 55, 64 or 89;
(b) paid to the Commonwealth, in accordance with the requirements of that section, the amount of any gratuity, bounty or deferred pay received by him in respect of the period to which the election relates; and
(c) is not, upon ceasing to be a member of the Defence Force after having made that election and made that payment, entitled to retirement pay or invalidity pay, or to a gratuity in respect of the period in relation to which the election relates;
the Commonwealth shall repay to the person any amounts so paid by him.