An appeal saw Pistorius' charge upgraded to murder and he was sentenced to six years, but prosecutors are once again pushing for a longer sentence, deeming the prison term "shockingly lenient".
"Neither Oscar, the defence or the family were involved in the production of this "film" in any way".
The athlete's family criticised the project for not being a "true reflection" of the shooting nor of Pistorius's marathon trial which gripped the world.
The movie is set to be released on November 11th on Lifetime and focuses on the South African Olympian's fall from grace when he murdered his girlfriend Reeva Steenkamp in the early hours of Valentines Day in 2013.
The parents of Reeva Steenkamp, the model shot dead by Oscar Pistorius, have expressed outrage over an upcoming USA film about how the Paralympic athlete gunned down their daughter.
On Monday, Steenkamp's parents also issued a statement saying they are horrified and upset about the movie.More news: Derek Carr should easily beat six weeks, could return in two
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The family further noted the film is a gross distortion of the findings of the court.
"They are still mourning the loss of their daughter and had no knowledge of the making of the film.They were never consulted".
The South African state is pushing for a longer sentence, with the case due to be heard in court on November 3.
During his trial, Pistorius claimed that he shot at Steenkamp through a locked bathroom door because he mistook her for an intruder.
June Steenkamp was not approached by Lifetime to participate, comment or be part of the making of the film, and did not give the producers any assistance.
Both the Steenkamp and Pistorius families said they will be taking legal action against the makers of the film.
The Steenkamp family has slammed the Lifetime film as well.