“I, the undersigned, understand that this authorization is to become effective immediately. I understand that I may revoke this authorization by written notification at any time. Any deductions made from my compensation within thirty (30) days of the effective date of this authorization shall be refunded by the association if revocation is made within such thirty (30) day period. I also understand that the amount of the membership dues deduction may increase or decrease if the association approves an increase or decrease of dues in accordance with its bylaws and rules of procedure. Upon notification to me by the association of an increase or decrease in dues, I understand that I will again have an opportunity to revoke this authorization and receive a refund equal to one (1) month's dues if revocation is made within a thirty (30) day period from the date of notification.”;