Chris has an issue where his phone is "robo dialing" without him. It's just calling numbers from his address book. He thinks it may have something to do with his Bluetooth headset, and Leo says it could be. It sounds like it is dialing the last number Chris called.
Leo suggests turning the Bluetooth headset completely off and see if that solves the problem. He can also check his call log. There's an Android app called Call Log Monitor, which can tell him a lot more about when and where his phone makes calls and how.