Haval loss of power and diff making noises

Bad service , pick up a noise on a brand new H6 haval gt. The workshop manager is useless and was very rude to my son until i walked in there. Then they wanted to start helping my son. The car made a grinding noise on idle, they said its normal drive it , so he went down to the coast , car has lost power , also the diff making noises , grinding noises from the turbo and no power at all. I drove the car back over 3 days as it does not want to go. Now the haval tech drove the car here in springs and sayes everything is normal. Theres a huge problen with this car. And was reported 3 days after the purches nothing was done now we sit with a ****ed car , and they say its normal. Really bad , the worst after sales ever . I wont recomend to buy a haval to anyone its *******