If security given under section 116(3) by the objector or objectors who gave notice under section 115 in respect of a trade mark is not sufficient to meet the expenses incurred by the Government as a result of the action taken by the Comptroller under this Part because of the notice, the amount of the difference between those expenses and the amount of security—
(a) is a debt due by the objector, or by the objectors jointly or each of them separately, to the Government; and
(b) may be recovered by an action taken in a court of competent jurisdiction.