Please tell me why out of all of those techs there why one of them didn't pull the fuse or relay for the electric parking brake after you got them released the first time? Future reference you can jump power to the pins on the relay to release them.
@HOTSHOTSAINT i do the same shit you do for a living. Been at it for 7 years now. Buy a power probe. You can run it off your jump pack. Study a little on vehicle wiring diagrams. It comes in handy in cases like this. The newer the car the more pain In the ass they are. Good luck to you man and safe travels.