Worst service in the history of customer service

I would like to state the horrid service I was recently rendered or should I say lack thereof from Hyundai Midrand. My vehicle was booked in at Hyundai, it was then sent to Mayfair gerbox. Mayfair asked that the dealer check certain things before handing the vehicle back to me. This took 2 & a half weeks, I had to chase & continuously call the dealer for feedback, Upon collection of my vehicle no one explained to me what was done,Never signed a job card either! When I got home,I discovered that my front light bulbs were blown, my windows made a loud winding noise when opening & closing& to frustrate me more,my sound system cables were laying loose in the engen, I returned the next day to have it sorted out. Only 4000 km's later and my vehicle is leaking oil again,I booked it in at Hyundai only to be advised that it was given to Mayfair gearbox again, It took a week of no feedback before I was advised that it wasn't the gearbox but the crank seal that had leaked onto the clutch kit. Did Hyundai as a dealership need Mayfair to tell them this? Could they not assess? Did the same thing happen the first time around? Russel **** about messaging me and displayed such a bad attitude.