iPhone 15 Pro Screen Shows Colored Line, Denied Warranty Service

My iPhone 15 Pro developed a colored line across the middle of the screen. I took it to an Apple service center, expecting assistance since the device is still under warranty. However, they claimed it was a user error without providing any clear justification, despite there being no cracks or visible damage on the screen. I even shared photos to demonstrate the issue, but no help was offered.

This has left me frustrated and feeling unsupported as a loyal Apple customer. I demand Apple reevaluate my case, provide a proper explanation, and resolve the issue under warranty. Customers deserve fair treatment and reliable service, especially when dealing with premium products like the iPhone 15 Pro.