Rover 25 Door Lock Problems

Hello there ... If I manually lock the car from the inside by pressing the black cylindrical door locking button (not using the remote key fob) on the top of the drivers door - all doors lock - If i then pull the same door locking button up...

Can anyone advise? Central locking stopped working but can use key for driver's door, my problem is I cannot get into the boot. My key won't open it and the boot is stuck fast. My car is due its MOT soon and I need to be able to open the bo...

Someone attempted to break into my car and have destroyed the key barrel which I am having replaced however the car alarm keeps going off now when I lock it and goes on for about 30 minutes. any advice on how to resolve this?