Chile’s National Consumer Service (Sernac) has accused a trio of wireless providers – Claro, Entel and Movistar – of failing to comply with rules on promotional SMS, TeleSemana reports. The allegations follow a study conducted by Sernac from December 2012 to February 2013 that showed that the three providers had shipped messages from companies promoting contests and sweepstakes. The SMS did not include clear instructions on how customers could stop the messages, and omitted important information on the competitions such as the dates they were to take place. Sernac added that requests from subscribers to stop the advertising ‘spam’ messages went unheeded. If found guilty, Claro and Movistar could face fines totalling CLP40 million (USD85,045) and CLP38 million respectively, whilst Entel would be hit with an CLP8 million penalty.