Netstar - epic failure to re-install my Netstar device

I have a Netstar installation but sold the vehicle and bought another vehicle. I phoned Netstar (please be prepared to hold more that 30 minutes) and they recommended that they transfer my contract to the new vehicle and do a re-installation. I had to pay R650 for this to happen. I paid the R650 and started mailing them regarding the re-installation date. After 9 days of constantly mailing and another phone call that lasted about an hour, no answer yet. Consequently, no insurance and I am thus put at risk by their failure to perform. I am at my wits end and Netstar are now ignoring my emails. Badly done Netstar!