Alarm goes on without provocation at any time of day or night. What can I do to stop it.

Alarm goes on without provocation at any time of day or night. What can I do to stop it.

I have taken the car to the dealership and spent $700.00 but haven't repair it. The alarm goes on during day or night and haven't been able to get it fixed. Locks from door and trunk were changed but still the same. I have to disconnect the battery every night so I can get some sleep. Please help.