"He prank called me, not realising the time difference yesterday, at like three o'clock in the morning. I was about to kill! He kept ringing," The Daily Star quoted Cyrus as saying on the Graham Norton show.
She added: I was yelling because I thought it was someone that got my number; my number gets out. So I changed my number and he kept pranking me. I really did believe it was a kid or something so I was like, “I can't really yell 'cause I think it's a kid but I'm not really sure.' Finally, I was like (shouting), It's three o'clock in the morning! He was like, Ha ha ha ha, it's Bieber. Call me back. I was like, Oh my gosh, I'm going to hurt this kid. My little sister loves him, but I'm going to kill him."