Horrible experience

When I take out insurance i take it so i can have piece of mind , but i got the opposite from hollard when it came to claim time. I had an accident on the 2 may 2015 , logged the claim on the 4th of may. Still even now the claim has not been proccesed. i have been calling then almost every to follow up and i get no clear answer as to why its delaying so much , they just say its still with senior validator. i spoke with the validator on the 18th may gave him all the details he needed the phone numbers of the people i was with during the accident. he also wanted to obtain my phone billing documents , which by the 25th of may he had obtained, which to be fair thats the day the claim should have been concluded. But to my surprise i found out he had never contact the people i was with all along & only started contacting them on the 29th of may. Throughout all this process i have been using a rental car , which my 28 days is expiring today. Now i will have no car since the claim has not been concluded & they are not contacting me back when i ask if they can extend the rental period , because its clearly not my fault that the claim has not been concluded at this point.