Power Lock Problem (Related to Remote Starter/Alarm)

[Semi]

I really really need help with my car, I am currently having a problem with my car's power lock where it will lock the doors randomly at random times both when I am driving and not driving, at times my power lock switch on both side of the door won't work if I try to lock the doors, however, pressing unlock would always work, this problem is driving me nuts, after this problem started, I took the car back to the guy who installed the remote starter/alarm device for me, he cut the wire that allows the alarm module to control the power lock, I tested this for a week without the same problem, then he figure it's the module's problem, which he replaced one for me, and it only lasted for about half a month, and it's now doing it again.

Because the current state of my car, I can't say if it's really the module problem all alone, because I have a bad power lock actuator on the front passenger door, which I asked the mechanic to unplug it for me, however, I noticed that if I have the key inserted to the ignition keyhole, even when it's at the "off" position, when I close that door, it will unlock 3 other doors which may be locked, which is something I am suspecting that could have affected the alarm module to act the way it is.

Another thing that I suspect is the new aftermarket master power window/lock switch that I have bought and installed from Taiwan, which may somehow be incompatiable with the alarm module.

Anyone who may have a solution to this problem please help, this problem has been around since last december and I am afraid that the actuators on the other doors may break at this rate.

PS: Is there any possibility that installing a new battery may have affected the alarm module to act this way?

(The brand for the remote starter/alarm is Barracuda, remote control has 3 buttons on it)

[Semi]

I guess no one knows what might be causing the problem?