A customer who is about to vacate any premises supplied with service by a public utility, or who for any reason wishes to have service discontinued, shall give at least 24-hour written notice to the utility, specifying the date on which it is desired that service be discontinued. The service discontinuance shall be under the terms in the rules and regulations of the utility filed with the Commission. In the absence of notice, the customer shall be responsible for service rendered.
52 Pa. Code § 61.24