Trailer doesn't match the movie

Rating: 1/10 (26 November 2016)

The trailer for Arrival, and I just re-watched it, is an amazing teaser for some amazing first-contact, science fiction drama - but implied at least some breath taking action and a lot of mystery.
However, that is not actually what the movie is about. It's a really poor, slow moving, confusing story, that was not entertaining. No Spoilers, however the brief summary that is listed here basically sums up the whole movie: "A linguist is recruited by the military to assist in translating alien communications." A couple more words and it spoils the whole plot.
I would have really like to see the movie that the trailer was about. If they would have made a trailer that reflected the actual movie, I wouldn't have seen this movie. I guess that is 10-stars for the marketing department.