OnePlus India — My oneplus nord 2 is damaged by authorized service center

I purchased my oneplus nord 2 on 19 jan 2022.it is under warranty. 2 months ago suddenly the screen comes out from from the phone then next day i went to service center they said the screen has been degum so will repair it .then after repairing after few days I found some dust particles inside the lens of front camera, then again i went to service center they appolized and they repaired it for me . after few weeks my back panel automatic started coming out because the engineer does not packed the mobile properly. then i went to service center they said we are not filing a complaint for this we repair it without filing complaint. after few hours when i went to pickup the phone from service center.now its little bit interesting, I found some dust particles inside the lens of back camera, i told them that is this your service they said give us the phone we will remove it, after removing dust particles now my whole is seen blury as there scratches inside the camera