I got tricked yesterday too, these guys are very professional - scary! Virus warning pop ups (adware), claiming immediate action to prevent data loss and system damage. Call toll free on 0800 number. They used YODA CARE (yodacare.com) as the agent to handle the matter after taking payment and get me to e-sign a document. Yoda care claim to be an official company, my investigation is still pending....
***They convince you to give them remote access to your computer then justify the virus by opening system operations and fooling you into believing 'sleeping' programmes are due to virus "...it should be running" he said "...see all your programmes are down". Also they were able to show me via remote control that my Apple Mac Care plan had expired and would need immediate payment of new Apple Care Plan before work could be down to 'remove' the viruses.
NOTE - All of which is rubbish. 1 - Official Apple care cost for 1, 2, 3 year plans are cheaper. 2 Apple Care tech will NEVER remotely control your computer, only control the pointer so you can click the right buttons! 3 - Apple doesn't get viruses, just adware which is popup's which trick you and then guide you to take action and allow them in.
ACTION - Contact Bank to report fraud, keep any screens shots, search History and better still an official Apple Tech's report following there remote assistance (controls pointer, NOT able to click and move freely through your computer!)