The couple said that the 18-year-old's life is a whirl of 'music, parties and paparazzi', reported Daily Mail online.
"The music and the parties and the paparazzi, I mean, it's like living in Lebanon now," said 'Parenthood' star Shepard.
However, Bell tried to smooth things over by acknowledging they couldn't prove Bieber was the root of the problem.
"In his defence, I will say we don't know the exact house the music is coming from. We just know since he moved in, the music has been blaring," she said.
Despite their claims, Bieber recently revealed that he still listens to his parents.
"I am a man now. I've become more mature and a whole lot more grown up. I am an adult now, and that gives me more freedom. I don't have to listen to what my parents tell me anymore. But I still obey my parents. But I don't have to. I could shock them, too. If I really wanted to do something that they would not agree with, then I could do that now. Somehow that's reassuring," Bieber had said.