They would target your plane with ground-to-air missiles and Flak cannons and force you to land accompanied with two F-16 Falcons until you finally become talkative again 
Okay maybe not that extreme, but the PPL license would be revoked after landing because of entering and flying through various airspaces and landing on an airport without ATC clearance.
The first time that happens a good lie is a way out: “My radio transmitter failed”.