If the screen is still working correctly then you need to get the screen protector replaced. It's not a fault with the phone, but protectors don't last for that long as they are ment to be sacrificial. See if you can find a Samsung approved repair agent by calling the Samsung Customer Support. Should be a straight forward thing to get done and you will be able to enjoy that device of yours fully again.
Yes. Bought from Samsung Flop 4 a couple of weeks ago and told it was physical damage, asked for the photos of the damage and was told 36hrs ago yhey have being sent now.... Still waiting, do not pay contact trading standards, this issue is well known.