Beware of ****!

Someone claiming to be from Vumatel phoned us and recommended one of their service providers to sort out our Wi-fi connection problems. Around came "wirelessnerds.co.za". They installed a device, charged us R2150 and have now disappeared. It doesn't work, they don't answer their phones nd their website is uncontactable. The technician was "Lucky" and his "boss" is Shaun van Wyk. It appears to be a **** - DON'T GET CAUGHT!!