Worst experience with car insurance in 55 years

I have had a car accident where my car was written off on 29 May 2021. It is a straight forward claim (*** ~ Broker ***-01) and the claim has not yet been paid. The person handling the claim at Integrisure is never available when I call. I did not get any written feedback. The online claim progress on their website shows the last action taken as 07 June 2021, Now the matter is with the insurer (Omnisure) and I had to resend all documentation and information already given to Integrisure to Omnisure. Omnisure, when phoned on 11 August 2021, said everything is ready and done and that they will pay out the amount to me the same day. I still haven't received payment as yet. Me and my wife are pensioner and are now without transport since the accident. We have to ask neighbours and friends when we have to do shopping. Even after having told this to the broker (Integrisure) and the insurer (Omnisure) nothing is happening. I had no meaningful feedback from Omnisure at all. Only one telephone call from Omnisure and one liner emails requesting information already submitted to the broker, Integrisure. This is the worst experience with car insurance ever in my 55 years of having had car insurance.