no communication and slow claim process

This is the worst car insurance company, I was in a car accident on the 28th of October I notified them and they asked me to send them documents and I did , after that is was quiet, no communication nothing, i called everyday from that day and i’m sent pillar to post , one day they have received the documents and the next they didn’t, how can validating a claim take 15-20 days, when will the claim be processed, i travel work with the car daily, now i don’t have a car but i will be paying for the car, what the use of this insurance if they can’t assist when you are vulnerable