Regulations for Administration of Mobile Broadband Businesses Article 73

The operator shall, when found with poor management or poor service quality that suffices to impair the subscriber's equity, adopt improvement within a deadline specified by the competent authority.
中文原文 行動寬頻業務管理規則第73條
經營者營運不當或服務品質不佳,足以損害使用者權益時,應依主管機關之通知限期改善。

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