The Cellular Mobile Operators (CMOs) declared the Federal Board of Revenue’s (FBR) move to block SIMs of the non-filers as a violation of the Pakistan Telecommunication Act. The telecom companies have penned a letter to the Ministry of Information Technology and Pakistan Telecommunication Authority (PTA), highlighting concerns and legal constraints regarding the blocking of 500,000 SIMs of non-filers. The letter emphasizes that telecom companies are mandated to provide uninterrupted services to consumers under the Telecom Act. It underscores that the sudden blocking of mobile SIMs contravenes legal provisions, potentially inviting legal action from affected customers. They assert that the decision lacks a comprehensive review of constitutional and legal aspects, posing a threat to taxpayers’ rights and the telecom industry. The letter advocates for compliance with prevailing legal requirements before the termination of SIMs, urging for transparency in implementing tax laws. Additionally, it calls for a mass media campaign to raise awareness about the ban on non-filers, emphasizing the importance of informed public discourse.