Leah Messer is at war with MTV!

In a preview clip of the upcoming episode of Teen Mom 2, the reality starlet's two ex-husbands, Corey Simms and Jeremy Calvert, discuss their concerns over the mother of three's suspected substance abuse problem.

"She went from being normal to a complete 180," Calvert commiserates with former nemesis Simms over dinner at a local West Virginia pizza restaurant. "Prescription pill problem."

"This drug issue that everybody knows she has is swept under the carpet, and she don't want nobody knowing where she went," Simms vents. "We're the fathers of her children. We need to know what's going on with the mother of our children. Why are you sweeping it under the rug acting like there's no big deal?"

Now, the normally soft-spoken Messer is taking to Twitter to lash out against the new scene, calling it "scripted" and "set up."

"#scripted," she wrote under a link to the clip. "I talked to Jeremy the whole time…Jeremy can't stand Corey…This was definitely SET UP and not even the truth."

The furious rehab-alum explains that Calvert, the father of her 2-year-old daughter Adalynn, was prompted to talk about the drug issue by a show producer.

"In the scene you can tell Jeremy was looking over at a producer saying something about a prescription pill problem and they edit it to where it looks as if he is saying that to Corey," she said.

The mom to 5-year-old twins Ali and Aleeah seemed to not care if MTV punished her for slamming her own reality show.

"Don't care if I do get in trouble this is BS," she fumed. "I should open my mouth way more!"