The families of Nicole Brown Simpson and Ron Goldman are upset over the upcoming FX miniseries "The People v. O.J. Simpson: American Crime Story," and they’re taking the creators to task for the "troubling" project.

Goldman's father, Fred, and sister, Kim, joined Brown's sister, Tanya, for a sit-down with Dr. Phil on Monday to discuss their concerns about the highly-anticipated true crime drama. This will be the first time the family members, who say they weren’t consulted, will appear together on the same show at the same time

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"[John] Travolta, [David] Schwimmer, Cuba Gooding [Jr.], shame on you guys," Tanya said, calling out the cast of the miniseries. "You should have called the families."

The family members also shared their concerns that the show will trivialize the tragedy and pain they've suffered or possibly be taken as fact by future generations, who aren’t familiar with the riveting 1995 O.J. Simpson trial.

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"A whole new generation who never saw this take place is going to see this series and assume that everything is fact," Fred shared. "That’s going to become the new reality and that's very troubling to me."

Author Jeffrey Toobin, whose book "The Run of His Life: The People vs. O.J. Simpson" was the basis for the miniseries, defended his representation of the case, and the show's depiction of the events.

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According to Toobin, the show is not looking to exploit the murders and the series treats the victims and their memories with great respect.

"This is not a story about how the victims were unimportant," Toobin explains. "This is a story about how the process didn't give those victims what they deserve."

Watch the entire interview with Dr. Phil on Feb. 1. Check here for local listings.

WATCH: Nicole Brown Simpson's Sister Tanya Says She Was Never Consulted for 'American Crime Story'