Worst service ever

To insurer FNB Short Term insurance, I am tired of complaining & calling about the service provider that you sent my car to. The vehicle went back to same service provider & I am still picking more issues on their repair work. They are unprofessional & their workmanship is probably the worst I’ve come across & when I complain it’s as if I am unfair & unreasonable. I understand that the vehicle won’t be in the same condition as pre accident but prime coat, paint stretch, airbag module faulty, sensors still missing & no job card was sent to me or invoice sent to me which makes me very suspicious. Now FNB concludes when the vehicle is still in complete. You’re the smartest insurance I’ve come across.