47 CFR 64.1140 – Carrier liability for slamming
(a) Carrier Liability for Charges. Any submitting telecommunications carrier that fails to comply with the procedures prescribed in this part shall be liable to the subscriber’s properly authorized carrier in an amount equal to 150% of all charges paid to the submitting telecommunications carrier by such subscriber after such violation, as well as for additional amounts as prescribed in § 64.1170. The remedies provided in this part are in addition to any other remedies available by law.
(b) Subscriber Liability for Charges. Any subscriber whose selection of telecommunications services provider is changed without authorization verified in accordance with the procedures set for in this part is liable for charges as follows:
(1) If the subscriber has not already paid charges to the unauthorized carrier, the subscriber is absolved of liability for charges imposed by the unauthorized carrier for service provided during the first 30 days after the unauthorized change. Upon being informed by a subscriber that an unauthorized change has occurred, the authorized carrier, the unauthorized carrier, or the executing carrier shall inform the subscriber of this 30-day absolution period. Any charges imposed by the unauthorized carrier on the subscriber for service provided after this 30-day period shall be paid by the subscriber to the authorized carrier at the rates the subscriber was paying to the authorized carrier at the time of the unauthorized change in accordance with the provisions of § 64.1160(e).
(2) If the subscriber has already paid charges to the unauthorized carrier, and the authorized carrier receives payment from the unauthorized carrier as provided for in paragraph (a) of this section, the authorized carrier shall refund or credit to the subscriber any amounts determined in accordance with the provisions of § 64.1170(c).
(3) If the subscriber has been absolved of liability as prescribed by this section, the unauthorized carrier shall also be liable to the subscriber for any charge required to return the subscriber to his or her properly authorized carrier, if applicable.