the OE alarm/central locking is playing up, and being delocked i cant get into my car

is there any way i can get into it, like sticking something down between the window and seal ?

id prefer it if any info was sent by PM, not a good idea to go advertising how to break in on the forum

im just hoping that once ive got the door unlocked, the alarm will disarm with me using the key fob once inside the car, if it doesnt then the alarm will just keep going off........

or......is it rigged up to the battery ?.......could i disconnect the battery ?