claim nightmare

My car was involved in an accident on the 21 May 2015. I was out of the country that time and my sister was driving my car. I got a claim no 904604 and I was told the car was going to be assessed and the report will come out 3 days later. Three days passed and there was no response, followed up with them and they told me they still didn't have the report. Asked the insurance to organise car hire for me when I come back to the country in 5 days time. This was not done up until the last day if my departure where I had to call discovery to push them to organise the car for me. Got the car eventually 5 days after the accident still no report. I called the insurance again 8 days later regarding the report and I was told Simon will email me and update me. To cut long story short got the report 2 weeks after the accident. Authorization of the claim took a further 3 days and the auto body received this 2 day later. 3 weeks later the car is still in repairs no part car hire is about to expire and discovery won't extend the car hire. The autobody won't provide me with a courtesy as they don't have one. I don't have no car and need to commute to work.