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 3 days notice to the utility, specifying the date on which it is desired that service be discontinued. In the absence of notice, the customer shall be responsible for service rendered until the time that the utility shall have actual or constructive notice of the intent to discontinue by the customer.
52 Pa. Code § 65.12
The provisions of this § 65.12 issued under the Public Utility Code, 66 Pa.C.S. § § 317, 501, 1301, 1304, 1501, 1502, 1504, 1507, 1508, 1702 and 1704.