Every individual disability insurance policy issued after January 1, 1968, except single premium nonrenewable policies, shall have printed on its face or attached thereto a notice stating in substance that the person to whom the policy is issued shall be permitted to return the policy within ten days of its delivery to the purchaser and to have the premium paid refunded if, after examination of the policy, the purchaser is not satisfied with it for any reason. An additional ten percent penalty shall be added to any premium refund due which is not paid within thirty days of return of the policy to the insurer or insurance producer. If a policyholder or purchaser pursuant to such notice, returns the policy to the insurer at its home or branch office or to the insurance producer through whom it was purchased, it shall be void from the beginning and the parties shall be in the same position as if no policy had been issued.