HELLO & WELCOME ..
Not good news, the dealer experience has never been good for me, Definitely keep a record of all conversations verbal face to face or phone, details of who you spoke & a what time. Take & keep copies of all emails & written correspondence. You must detail exactly what you see is wrong with the vehicle. what you would expect/accept as a fix. Give the dealer an opportunity to reply, then if not happy tell the dealer you will be writing to the Dealer Group General Manager with your buying experience, your local trading standards officer & that you intend to name shame & post on this forum. This is what i had to do to get my issues resolved for my previous car & i was refunded in full.
A good reputation takes years to build but it can be lost overnight. Best of luck.