Renew it group damages my car

I took in my vehicle as per authorisation received by my insurer, Renasa in September 2014 to Durban Central panelbeaters and after several visits the work done on my vehicle was poor, then in October 2014 I was contacted and informed that one of their employees smashed another clients vehicle into the rear of my vehicle causing extensive damage, I did not want to except the vehicle back but I was assured by the management that all repairs would be done professionally.I was informed at the end of October that my vehicle was ready and since then I have been having problems with the vehicle and to date the repairs done to the vehicle is very poor workmanship, I've taken to other panel beaters and they all expressed concerns in the way the paint work and repairs were done, my vehicle as also depreciate due to the impact and shoddy workmanship.Wayne who is one of the senior mangers there makes false promises and my vehicle has been there more than 10 times and today after asking him to find a solution he says I should get an attorney and sort the problem, I told him I will go to the press and he said if I have mor money than the group ceo then only must I go or he will take me to task.