Bad service, and total inconvenience

Good morning my name is Lufuno Tshivasa , I am a Budget insurance client who was involved in a motor vehicle accident last week of September,which left my boot and bumper completely damaged. I submitted a claim to Budget insurance and I was referred to Renew It Rivonia for the repairs of my car which is a Toyota Yaris 2019 model. I took my car in on the 14th October 2021 and I got my car back on the 13th November 2021 after payment of excess of R11 700 ,upon the giving my car they showed me the boot and bumper which were replaced and paint work was well done and they to me they have a life time guarantee on their repairs if I am not happy. I drove my car home safely. When I arrived home I noticed that the back seat seat belts were hanging out and the front passenger door grips when opening and closing which both were not a problem when I took my car in for repairs. I then sent a WhatsApp messege to one of their employees named Issac who helped with payment and I sent him the pictures as he requested,but after that he started to ignore my texts .I then called their call centre/reception and I did this everyday for 3weeks straight and everytime I called the lady on the other end told me that she would leave a message for Brandon, who is apparently the one who must deal with my complain,after calling numerous times without any help I asked for whoever is in charge and I was told there is no one incharge but Brandon who was not getting back to me. I finally called Renew It Sandton and I spoke to a nic lady who couldn't believe what I went through,she then suggested I call my insurance company,I Did that and I'm still using my car daily to go to work and for family trips which is not safe for the passengers. It saddens me that nobody is willing to help me. I am so frustrated