Engine Noise problems of the 2016 Dodge Charger

I bought a car Dodge Charger 2016 srt from saudi arabia alkhobar umc (united motors company) Dodge dealer show room I received the car on 23rd March 2016. All regular maintenance are done in umc center since then. - in April 2016: heard strange sound from the front wheels: first time I gave the car umc service center and they changed the right wheel bearing heard same sound again from front wheels the second day: second time I gave the car to umc service center and they changed the left wheel bearing in December 2016 after 37000 km I started seeing the following: 1- message in the dashboard "transmission temperature too high" 2- strange sound coming from the gearbox 3- strange sound and vibration coming from the engine third time: I gave the car to umc service center and it stayed for three days then they said nothing is wrong with the car, so I asked them to have an engineer to test it, the engineer drove the car and speed up to 200 km/hr and he heard strange sound from the car and acknowledged the car problem forth time: I gave the car to umc service center, they acknowledged the problems with gearbox and engine, and they kept the car now for almost one week. They informed me two days ago that they have to replace the gearbox and also they have to disassemble the engine and change the 16 hydraulic valves of the engine, due to my complaint they told me today that no gearbox repalcement will be done I am not accepting to buy top end car srt from Dodge then I have all of these problems in the car. The dealer in saudi is refusing to do the above and refusing to help or support by even raising it to USA head quarters so I took the following actions: 1- sent multiple emails to Dodge fca group management 2- contacted the USA customer service hot line to file a complaint 3- I filed a complaint in the saudi consumer product safety against umc.