Regulations for Administration on Type II Telecommunications Business Article 18

The tariffs for the Type II Telecommunications Businesses shall be determined by operators in accordance with Paragraph 5 of Article 26 of the Telecommunications Act.In the case where a user refuses or delays to pay the tariff, an operator shall prescribe a time limit to demand for payment of the tariff in arrears, and shall inform the user that the services will be disconnected in accordance with the service contract if the tariff in arrears is not paid before the prescribed time limit.Before the expiration of the demand period as referred in the preceding paragraph, an operator shall not disconnect the telecommunications services without proper reason.
中文原文 第二類電信事業管理規則第18條
第二類電信事業之資費,由經營者依本法第二十六條第五項之規定辦理。
用戶有拒絕或遲延給付資費之情事,經營者應定相當期限催告用戶給付積欠之資費,並應告知用戶未於所定期限內給付積欠之資費時,將依服務契約之約定停止提供服務之情事。
在前項催告期限屆滿前,經營者無正當理由不得停止提供通信服務。

English translation for reference only; the Chinese text prevails. Not legal advice.