The Doctor looked annoyed, he continued to speak on the phone. "Mphh how was I supposed to know there was explosives," He rolled his eyes. He wasn't going to give up , he knew he could find who it was , just because they had called. "What do you want with these people and my friends?' Keep him talking and maybe I can find a way to track him. 
The Doctor sounded serious,even for somebody who could be so childish, he could have his serious moments. Especially when it came to the safety of his friends, he was ;looking around.