If a purchaser elects to cancel a purchase pursuant to Section 11 [47-16-11 N.M. Stat. Ann.] of the Homeowner Association Act, the purchaser may do so by hand delivering notice of the cancellation to the lot owner or by mailing notice of cancellation, by prepaid United States mail, to the lot owner, or to the lot owner’s agent for service of process. Cancellation shall be without penalty, and all payments made by the purchaser before cancellation shall be refunded within fifteen days.