Bad service from FNB short term insurance

I am a third party approach and I have been referred to be assisted by Short term insurance at FNB. Claim has been submitted 3 weeks ago. All required documents have been submitted waited for week to get a response but nothing. Friday the 27th May 2022 I called them and was advised to get my own quote for assessment, I did that and Monday the 30th of May 2022 I submitted my quote and they responded with their own panel beaters details I called the panel beaters to make an appointment and was advised that they do not fix Mercedes Benz as they not accredited for Mercedes Benz. I called FNB insurance an explained. Till today I have not received their feedback. The service is very poor I am really disappointed and hurt on how they service clients or is because I am not their direct client I am just a third party. My details Mpho Tsikang.