The family of late singer Amy Winehouse has fiercely criticized a new documentary movie of her life for being “unbalanced” and “misleading.” Titled Amy, the movie is slated to have its debut screening at the Cannes Film Festival in May. While it initially received backing from the Winehouse family, the relatives of the Grammy-winning singer – who died at the age of 27 from alcohol poisoning in July 2011 – now wish to “disassociate themselves from the forthcoming film,” says a statement from a family spokesperson. In particular, the family believe that director Asif Kapadia incorrectly claims the Winehouse family did not support Winehouse when she needed them most. “It is both misleading and contains some basic untruths,” adds the family statement to PEOPLE. “The narrative is formed by the testimony of a narrow sample of Amy’s associates, many of whom had nothing to do with her in the last years of her life.