2. A subscriber shall not be entitled to compensation if the total time of interruptions is shorter than 36 hours in the settlement period. 3. Regardless of compensation, a subscriber shall be entitled to a return of 1/30 of a monthly rental fee for each day during which the periodically payable telephone service has been unavailable for more than 12 hours. 4. Where a designated undertaking fails by its own fault to keep: 1) the time limit for the conclusion of an agreement referred to in Article 87, or 2) the start-up date for the provision of services as specified in an agreement for the provision of universal service or the service referred to in Article 81 (5) – for each day beyond the specified time, an end user shall be entitled to receive from a designated undertaking the compensation of 1/30 of a monthly rental fee charged by this undertaking for the provision of periodically payable universal service or the service referred to in Article 81 (5), as specified in an agreement. Article 106. 1. A provider of publicly available telecommunications services shall consider complaints about the telecommunications service. 2. Where a complaint about a telecommunications service is not considered within 30 days of the day of its filing, it is considered that it has been taken account of. A complaint shall be considered if prior to the time limit the provider of publicly available telecommunications services sends a reply that a complaint has been taken account of or has not been taken account of. 3. Where a complaint about a telecommunications service has been taken account of, the charge referred to in Article 80 (2) shall be subject to return. 4. The Minister competent for digitalization shall specify, by means of an ordinance, the complaint procedure as well as the conditions which should be met by a complaint about the telecommunications service concerning: 1) failure to keep the time limit for the conclusion of an agreement for the provision of universal service or the service referred to in Article 81 (5) by a designated undertaking by its own fault, 2) failure to keep the start-up date for the provision of the service as specified in an agreement for the provision of telecommunications services, by a service provider by its own fault, 3) non-performance or inadequate performance of the telecommunications service, 4) inadequate calculation of dues resulting from the provision of the telecommunications service – having regard to the necessary protection of an end user’s interest. Article 107. 1. An end user shall have the right to vindicate, through judicial proceedings or proceedings referred to in Articles 109 and 110, any claims defined in the Act, having exhausted the complaint procedure. 2. The complaint procedure, in the event referred to in paragraph 1, shall be deemed to have been exhausted if a complaint has not been considered or the provider of publicly available telecommunications services fails to pay the vindicated claim within 30 days of the day the complaint about a telecommunications service is taken account of. Article 108. 1. The claims vindicated under Article 105 shall be subject to limitation after a period of 12 months from the end of the settlement period during which the telecommunications service was unavailable, or from the day when a service was inadequately performed or should have been performed.