Except as prohibited by State or federal law, a utility may refuse to connect or may disconnect service for a former nonresidential customer unless the customer has paid or made satisfactory arrangements to pay any outstanding bill, or undisputed portion of a disputed bill, for prior nonresidential service. A utility may not refuse service to a customer for nonpayment of an outstanding bill that is over 7 years old, unless the: Customer signed an agreement to pay the outstanding bill before the expiration of this period; or Outstanding bill is for service obtained by the customer in any manner described in COMAR 20.31.02.03D or COMAR 20.31.02.04A(1)—(4).