Discovery Insure - We aim to cheat our Vitality Drive paying customers!!!

This as followup on my 12 June 2020 review. *** I have not received any feedback from Discovery Insure and every day I drive to my business I get penalised for speeding on a high way that is 120km/h but marked as a 60km/h on Discovery. I have personally send mails phoned about this road so have my wife, my father in law and even a friend for years now. We are ignored and no follow up is ever done, they seem to just refuse the proof and input form customers again and again. If anybody have any advise on legal route as they are clearly not willing to correct the faults on the system with which we are punished for their incompetence.