But if you've done the first sabotage, the second is basically the same thing...
Send a message to The Guy... he'll ask you which service to do and then, depending on your choice, when you order pizza and Nick arrives, he'll agree to one of the deals.
but you have to send a message to The Guy before ordering the pizza, of course.
At what point in these steps are you unable to move forward?
If you could explain in detail what exactly you do and what happens or doesn't happen... I can understand the problem better