Seeking advise regarding poor service

In 2017 May i bought a white Audi A1 and the handing over of the car was done on the 11th of may, when i got to the dealership i was told by the lady that was helping me that they seem to have misplaced the original keys of the car and il drive with the spare till they find the keys of which it was a Friday nd on Monday i then called to ask her and still no sign of them so i gave her a chance but it seemed as if no1 knows what happened to the keys. In july the car was already due for service as it was a pre-owned car and only to realise that also the service book is not there and i called her again only for her to tell me the service ppl can stamp the warranty book but i kept asking her where tje boom was and stil no answer or solution. A year later im stil waiting for her to tell me way forward because when i took the car in again for service they needed the book and i stil dont have my spare keys. I spoke to the lady numerous times and sent her whatsapp messages she doesnt respond and i told her that i cant be paying for a car that doesnt have 2 basic but important things any car shud have. Im gonna have problems trading in this car shud i wana sell it so i would really appreciate it if the manager stepped in and made a plan as im stil paying this car without any of those 2 things.