Telecom operators have started the process of scrubbing telemarketing messages but will allow their transmission to mobile subscribers till regulator Trai takes a final call, according to industry body COAI. The Telecom Regulatory Authority of India (Trai) on March 12 gave three days” time to entities like banks, e-commerce firms and others for complying with telemarketing rules, failing which they were to be barred from sending out commercial communication to customers.