We have already tried to contact them, but unfortunately they ignore us. It is a pity, but Tetris is just a business based on the sale of rights, so it is extremely unlikely that anyone will meet us. As we understand it, they sell the exclusive right to publish Tetris on specific platforms, so there can not be several publishers at one time.
The fact is that we are far from the first to encounter oppression by the holding, if you are interested, look at the story of the Xio Mino game. The monopoly on gameplay, coupled with the enormous cost of official licensing, leads to the fact that we will probably never see a decent and affordable multiplayer for such a simple game.