Any person, or any agent, officer, or other representative of any person, willfully violating the provisions of s. 687.03 shall forfeit the entire interest so charged, or contracted to be charged or reserved, and only the actual principal sum of such usurious contract can be enforced in any court in this state, either at law or in equity; and when said usurious interest is taken or reserved, or has been paid, then and in that event the person who has taken or reserved, or has been paid, either directly or indirectly, such usurious interest shall forfeit to the party from whom such usurious interest has been reserved, taken, or exacted in any way double the amount of interest so reserved, taken, or exacted. However, the penalties provided for by this section shall not apply:
(1) To a bona fide endorsee or transferee of negotiable paper purchased before maturity, unless the usurious character should appear upon its face, or unless the said endorsee or transferee shall have had actual notice of the same before the purchase of such paper, but in such event double the amount of such usurious interest may be recovered after payment, by action against the party originally exacting the same, in any court of competent jurisdiction in this state, together with an attorney’s fee, as provided in s. 687.06; or
(2) If, prior to the institution of an action by the borrower or the filing of a defense under this chapter by the borrower or receipt of written notice by the lender from the borrower that usury has been charged or collected, the lender notifies the borrower of the usurious overcharge and refunds the amount of any overcharge taken, plus interest on the overcharge taken at the maximum lawful rate in effect at the time the usurious interest was taken, to the borrower and makes whatever adjustments in the appropriate contract or account as are necessary to ensure that the borrower will not be required to pay further interest in excess of the amount permitted by s. 687.03.