Water/moisture damage

I have problem with my iPhone Xs.

After a walk in the rain, my clothes in which was my iphone xs were wet, after that he worked 12 hours, and after that he died. The official service center refused warranty repair, although the phone has IP67 protection. I have photos from an official service center, where can see that there was little moisture inside but what affected the performance of the device. I would like to Apple to fulfill warranty repair obligations, as it is obvious that my device doesn’t meet the declared level of protection against moisture!

How I can get help in this question?