Poor Afersales Service from UmhlangaMulitfranchise

I purchased a vehicel from Umhlanga Mulitfranchise - Imperial Select in June 2014 -Last year. I was impressed with the service recieved however the aftersales service is just pathethic. My car was supposedly serviced last year upon purchasing and i gave in my service book to have it stamped in December 2014 as this was not done when i purchased the car. I was then informed in January 2015 that my service book has been lost. This was the original service book. I was assured that this will get sorted and a new book would be made. To date i have not recived anything. I have spent money putting petrol in my car numerous times to get my service book and only to be given empty promises. I have also made numerous phones calls at my expense. I have not being able to service my car without a service book . How can service be so pathethic and how do i as a customer get compensated for 6 Months of ********ting????? This is awesome customer service!!!!