[Resolved]  Renault — Technical problems and damaged parts

I bought sandero stepway 2016 from renault's branch in egypt via a car dealer.
in less than 25000 KM the car showed problems in the spare parts more than the problems that should exist in a 25 years old car.
I had a problem with the wheel stud, air hood, car's balance and exhaust box.
I tried to contact the service center to solve these problems, and the car was checked more than once but nothing were repaired. I contacted the customer service center but they didnt help me at all to solve my problem.
I've been complaining for 3 months now with no real results at all.

I want to solve my problems asap and change the damaged parts immediately, or at least I should get a refund for the total price of the car and hand it back as it's not fair buying a new car only to face problems and be afraid when using it because some of the problems might risk my life .