Automobile purchase

We bought a 2008 Mercury Mountaineer, which I picked up on Friday. We had requested 2 add-ons. One was factory dual DVD players for the rear seats, the other was a remote start system. We were told at the last second that the remote start would not be factory. They were taking to a customization shop, but promised that it was the reputable shop, and their would be no damage to the vehicle or signs of their work. When I got the vehicle we discovered that somewhere along the line they had messed up wiring in several things. The Satellite radio no longer works, neither does the Sync system (like On-Star in the new Fords). The original theft deterrent system no longer works. They placed a large antenna down the middle of the front windshield, with two lights that blink constantly when the car is shut off that looks RIDICULOUS, which we did not, and never would have, agreed to. They have stated that they will work on it if we bring it in, but at this point have no idea what the damage is to cause all of those components to not work. We are wondering if there is a time period that we have to return the vehicle and cancel the sale since it is not in the condition it was promised to us? We are in the state of Nebraska.

If it has never been right from the beginning you can return it yes.

Check also with your state attorney general's office for other local car return rules, lemon laws etc.