I have locked my kets in the trunk of my 350z 2007 roadster, how do i open the trunk?

question edited for clarity.
question moved to model category.

https://www.google.com/search?q=1998+bmw+m+roadster+trunk+won%27t+open

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I would have the shock absorbers checked. Sounds like they could be shot.

The same thing happened to my car and the dealership had to replace the entire top. I think it was a problem with the frame.

MY 350Z ROADSTER HAD THE SAME PROBLEM CLOSED TOP ON SLANT CAUSING PROBLEMS W LATCH MECHANISM. IN THE THE RIGHTMOST LATCH IS A SWITCH WHICH NEEDS TO BE FULLY DEPRESSED BY THE END OF THE HOOK IF ITS NOT EVEN THOUGH EVERYTHING IS LOCKED LIGHT WILL STAY ON. IN MY CASE THE RUBBER COATING OVER HOOK HAD COME OFF. SOLUTION WAS TO INSTALL RUBBER SLEAVE OVER HOOK AND THE SWITCH WAS DEPRESSED AND LIGHT WOULD GO OFF.SWITCH OPERATES LIKE DOOR AJAR SWITCH. ALSO MY TOP HEAD TO BE SLIGHTLY REALIGNED TO CENTER LATCHES IN SLOT. ON THE INSIDE OF THE TOP WITH THE TOP HALF RAISED YOU CAN SEE TWO STOP ADJUSTMENTS ONE ON THE LEFT AND ONE ON THE RIGHT. THEY HAVE A ROUND RUBBER HEAD ABOUT AN INCH WIDE WITH AN ALLEN SCREW IN MIDDLE TURNING SCREW DETERMINES HOW FAR FORWARD O BACK THE TOP STOPS. AFTER ADJUSTING THE SCREW IS LOCKED INTO PLACE BY TIGHTENING NUT A BASE. MAKE SMALL ADJUSTMENTS TILL YOU GET THE HOOKS CENTERED. HOPES THIS HELPS SOMEONE.

Before I applied any force to any body par,t I would wait until a dealer opens on Monday, take the VIN and/or title or other proof of ownership and have the dealer make you a new key.

Call a locksmith.

check the partition in the trunk to make sure it is fully in the down position. if the light on the switch is orange then the microswitch is not depressed. if the light is red and the top still wont open then you have a bad pump due to water ingress from clogged up body cavity drains. this is an expensive repair.

one under the hood and one at the drivers kick panel

get a dealer to look at it. The mechanism is fairly complex and the motor is very expensive. I you bust either the frame or the motor it'll really cost to fix. It may be freed up at much lesser cost.
Hate to tell you to get other help but thats my best advice.