UPDATE:
I called Apple and spoke with a actual person (that's great!).
He told me to bring it to the Apple Store and if it's a factory problem, a senior will probably give authorization for a free repair. So I did! Got helped by a genius service person who really wasn't happy that I called this issue a common problem and that I was told to bring it in. He said that the phone colleagues are always referring people to them to fix problems and that this wasn't a common problem. I told him nicely that I tried to troubleshoot the problem and found many more people with the same issues and that its one of the display's flex-cable. Man, I shouldn't have told him this because he aggressively told me that the cable just sits there and can't break from its own. He wouldn't let me speak anymore and started talking really fast. He wanted me to feel his superiority and that I need to be happy that he made time to look at my (only) 4 years old computer. When the senior came, he said to me that it would be a free repair and that I don't have to worry about it, and then he left. The genius person was annoyed and repeated the free of charge screen repair. I should buy apple care next time! I think he might had have a bad day. A few days later, I got the message to come and pickup my machine. It was indeed repaired free of charge. The genius who helped me that second visit was really polite and nice. Also spoke my own (local) language instead of English which helped.
I would like to thank Apple for fixing this problem free of charge!
This is how a company should react to a problem that isn't created by the customer.
