Wateen Telecom Ltd has been issuing fewer tax deduction certificates, raising concerns about tax mismanagement within the telecom sector.The Federal Tax Ombudsman (FTO) has directed the Federal Board of Revenue (FBR) to investigate the irregular practice.A complaint has been filed against Wateen Telecom Ltd for issuing an inaccurate tax deduction certificate.The FTO warns about the potential industry-wide tax avoidance and highlights the FBR's negligence in addressing taxpayer complaints.