This could've been a really decent movie if they stuck to one genre. It felt like they tried to make two completely different films and then somehow forcefully fit them together.
The main idea was not incredibly original, but it worked quite well. A seriously visually impaired woman is stuck in a dangerous situation and is trying to get help from a stranger through a video call. That part was mostly well done, with some forgivable flaws. (Characters making silly decisions just because with a logical step the movie would end after 20 minutes, or the fact that they tried to show the main protagonist's bad vision through an eye shaped "cutout" while nobody's vision is like that.) It had tension, it was engaging, it captured one's attention.
The connection between the two main female characters was also good, their shared journey was nicely done.
What sort of ruined it all more and more as the movie went on was the addition of the minor characters at Sam's work. At first they were just rather overdone and one dimensional. But later on they progressed into truly over the top burlesque, with zero connection to reality. And that's where the movie split into two. That sort of absurd comedy can work, but not paired with a fairly realistic thriller/drama. I get that they wanted to add obstacles, excitement on Sam's side as well, but it was really poorly done.
It's still a watchable movie, but it could've been a whole lot better with a revised script that kept the two sides more in balance.