Whenever a financed insurance contract is cancelled, the insurer shall return whatever gross unearned premiums are due under the insurance contract directly to the premium finance company for the account of the insured or insureds as soon as reasonably possible, but in no event later than sixty days after the effective date of cancellation. In the event that the crediting of return premiums to the account of the insured results in a surplus over the amount due from the insured, the premium finance company shall refund such excess to the insured, provided that no such refund shall be required if it amounts to less than one dollar.