If your car is something like wira:
Solution:
Even if installed with anti-theft steel plate on all doors also doesn't matter. Call the locksmith to open. They have very long modified steel "ruler" to hook up the steel cable/wire that connects to your door lock, this way will pop up the tiny "switch" (ie unlock the door already). It wont damage ur door seal or whatsoever......RM40 per "visit".......
Aftermath
1) Get the locksmith to uninstall the door lock & bring it back to "duplicate" one more set of key. (about rm80)
2) Now to disarm the alarm, for ori proton alarm, turn ur key & simultaneously press the black alarm button to disarm it.
Complication
1) If alarm is after mkt type which does not have "back door" for the alarm system, then require an accs shop sifu to come & do some wonders: bypass the alarm & hot wire start ur car, then drive to accs shop to change the alarm. Or not so bad case: just trace back the frequency / code (even running code system also can be trace) & rebuild a new set of remote key.
Of course if the sifu your sourced is not skillful then cannot perform the above task lor.
NOTE: PLEASE DON'T MISUSE THE INFO FOR BAD PURPOSE, STEALING WILL ONLY MAKE YOU POORER & MISERABLE IN THE END. GOD IS ALWAYS WATCHING YOU.