NO SERVICE AT ALL(WHOLE KP) - 8 weeks!!!!

3 weeks ago I wanted to write a complaint - but changed my mind as I thought I could resolve this internally with KP customer services. 8 weeks ago I got engine damage on my bmw 320 - it took me 3 days just to submit my claim(All the consultants were busy? - 6 weeks later claim approved(at last!) and sent to BMW(after I literally had to follow up EVERY SINGLE DAY!!!). Then it took BMW only 3 days to do a whole engine replacement(WOW a company that delivers). BMW submitted the invoice for payment as soon as repairs were done - I even followed up myself to make sure KP received the invoice(because you actually need to with them) - Which KP said they paid(3days after receiving the actaual invoice) - I asked for a proof of payment to give to BMW - but they say they cannot give me a proof of payment?! which I need to collect the vehicle!!!!!! It has now been 8 weeks without a car(2 of which the car is fixed and waiting) - called the complaints again today but I have no faith anymore - How does a claim take 8 weeks? Why do I have to keep following up? How many chances does an idiot like me give an insurance company like King Price? To what measures does one have to go?