No grave shall be hereafter opened in the cemetery of the municipality until perpetual care upon the lot where the grave is to be opened shall have been contracted for with the municipality, or perpetual care thereon paid. Should it be the desire of any person to have a grave opened and the body interred therein and perpetual care shall not have been previously contracted for or paid in full for the lot therein, the person may either pay the full purchase price for perpetual care or enter into a contract wherein payment shall be agreed. (Code 1975 § 8-261(A))