Flex Gate Problem in MacBook Pro 16 inches 2019

Well, there's only 01 and a half years that I've bought my Macbook Pro 2019 16 inches and I'm a perfect mac owner: never hit, never drop, use protection case and etc. Suddenly from one day to another, my screen just appears with a glitchy grey vertical line (around 3 centimeters) depending on the angle I open the laptop. It's clearly a factory problem, but Apple just said I have to pay for fixing it. I've made some research and I think it's probably the flexgate/cable problem or something related to a bad contact/connection problem between the screen and the computer.

Is someone having the same problem? Shouldn't they, as a premium tech brand, help me with a solution? I'm really sad and disappointed.