Ahmedabad: If all goes as plan- ned, cellphone users will soon get some respite from phishing and cyber fraud through the mi- suse of SMSes. The Telecom Re- gulatory Authority of India has directed all telecom service pro- viders (TSPs) to crack down on unauthorized promotional mes- sages by telemarketers and cy- ber crooks by blocking unverifi ed headers and message templa- tes.