The Revenue Service, SARS, has urged people to use their e-filing online system or the mobi- app - as an option to file their tax returns this year. SARS has also warned people to be vigilant of fraudulent emails and SMSes that claim to be from the Revenue Service. Several taxpayers raised concerns over receiving emails and SMSs with false information - made to look as if messages were sent from SARS. SARS Commissioner, Edward Kieswetter, says they will never request banking details via email, post or SMSs.