(a) Except as provided in paragraph (b) or (c), a telephone company or telecommunications carrier providing local service shall not charge a telephone service subscriber, as defined in section 325F.692, for a telephone or telecommunications service that is not required by the commission to be offered and for which the subscriber did not explicitly contract.
(b) If a charge is assessed on a per-use basis for a service described in paragraph (a), the charge must be applied as a credit to the subscriber's next monthly bill, if the subscriber notifies the telephone company or telecommunications carrier that the subscriber did not utilize the service or did not authorize the utilization of the service.
(c) A telephone company or telecommunications carrier that receives a notification from a telephone service subscriber under paragraph (b) shall inform the subscriber of the ability to block the services from future use by the subscriber, and shall block the services from future use by the subscriber, if the subscriber so requests. If a subscriber requests that the carrier or company not block the service or later requests to have the block lifted, the subscriber shall be responsible for charges caused by the future utilization of that service. The carrier or company may not charge a recurring fee for blocking the service.