43.7. In the case provided for in paragraph a of section 30.4 of the Act, the president reimburses to the customer
(a) the sums paid by the customer to the travel agent for the service that was not performed by the supplier in default; and
(b) where applicable, the sums paid by the customer to the travel agent for a tourist service, other than the service referred to in paragraph a, of which the customer could not benefit owing to the default of the supplier. If the customer has partially benefited from a tourist service, the reimbursement of the service is proportionate to the unused service.