Bought a new vehicle and at 1200 miles it breaks d...

Bought a new vehicle and at 1200 miles it breaks down. My salesman assisted in getting me transportation but after that I dealt with a week of excuses from the service manager and then miraculously in less than twelve hours the problem was identified, fixed and truck returned only to have same noise without the check engine light return a week later. I return to dealership only to be told well last time your truck was only running on seven cylinders. A brand new truck only running on seven cylinders is a problem!! He then goes on to tell me he hears nothing while driving the truck and when I show him video he leaves and comes back with it s supposed to sound like that. I told him it didn t sound that way when I bought and his reply was well ya probably just didn t notice. I came here on a recommendation from a friend but never again. If I could return the truck as a whole I would because these issues shouldn t happen with a brand new vehicle but then I d have to go back to the dealership and that I m trying to avoid. I ll take it somewhere else from now on.