I'm way oversimplifying this, but I'm going to enlighten you by saying that this isn't a part of law yet. It merely passed a checkpoint called legal committee (that consists of 25 MEPs) on its way to become a part of law.

There are still multiple checkpoints that can be used to counter this, and the proposal will almost certainly be voted on by the entire EP, probably in December/January.

That's why calling your representative makes a difference.