Front camera have dust particles

Dear Apple,

My Name is Daud Alvi and I am from Pakistan. I have got your one of the product called Iphone X recently there is an issue with the wifi signals occur then I have to go to the repairing center they have open my Iphone X and fix that issue but after that slowly slowly alot of dust particles got stuck in the front camera then I have to go again to them then they removed that dust from the camera but again after some time the same thing happen dust particles again gather around the from camera and it's keep on happening now ,I am so fed from this now and I am regretting now thinking about that did I waste my money on this phone because now the front camera is blur after some time when we remove the dust.

Can you please fix this problem.

Kind Regards

Daud Alvi