Alpine Autohaus

I bought a audi A4 2010 2.0t in the first week of december 2018 but the service i received from this establishment is jus so sad in the 1st day of driving a list of issues surfaced which i brought to the sales mans attention long story short my car has been in for repairs for the past 2 weeks no one keeps me informed about progress if i dont call no one informs me i was suppose to get my car back today after i gave them a list of faults ranging from suspension issues to a fault timming chain and cam follower low ideling oil consumption and even faded spots on the body from a buff they had done on the paint its two weeks i still dont have no clue when my car will be back i am a sales rep and need my car to perform my work duties is there a regulatory body i can take this up with as i am certainly not happy at all. They still tell me they dont have courtesy vehicles to give me so how do i pay for a car thats been in for repairs more than i have owned it this is the 2nd time in 2months.