CUSTOMER DISSATIFACTION

I booked my vehicle in for an inspection to be conducted on persisting jerking including issue at times of difficulty in starting. There was no available loan vehicle so I took a day off work. The vehicle was returned to me in running order with no known issue stated.2 days later I noticed the jerking resurfaced and yet again there was no loan vehicle I need to take a day off work. The vehicle was returned to me after swopping 2 coils as they could not be pin point the problem. On the 3rd day thereafter the jerking resurfaced. The part was replaced and smooth sailing for 2 until jerking reappeared. Then discovered that another component required replacement. I booked in the vehicle at the next available time and arrange towing at my own cost to the dealership and car rental. Today I had to take another day off work to sort out my vehicle and is currently booked in. I would like to start my utter dissatisfaction in the service been received, the unnecessary cost incurred to my and still not in a position whereby I have an operational vehicle. I have escalated to the DP on 4/05/2015 and still no response.