Demolition (2015) on Netflix

Plot summary

Davis works at an investment firm his father-in-law, Phil, founded and runs. His wife, Julia, is at the wheel when another vehicle strikes their car, and she is killed. While recovering in a hospital, Davis tries to buy candy from a vending machine that jams, and he writes a complaint to the manufacturer that becomes a long account of his own life. The letter reaches Karen Moreno, a customer service representative, who answers, and the two begin trading the details of what each of them carries. Davis goes back to work much sooner than anyone expects and starts taking apart household appliances with a small toolkit. Karen shares her home with Carl, who is both her boyfriend and her employer, and with her fifteen-year-old son, Chris.