Go Back.
Hit decline.
No way would he decline that call lol. What is he a mad man? IS THAT WHAT YOU WANTED!? FOR HIM TO BE A MAD MAN!? Oh wait technically you clicked on "answer the damn call already" so I guess you probably want him to answer the call and instead I tried to pull a fast one on you and say too bad. Well it didn't work this time but I'll get you next time! hehehehe JUST WAIT!
TFOCFBW: He-Hey Tom... Wha-What's going on?