Gen 7 Alarm problems

Had my Gen7 since May now but recently the alarm has started giving me weird spontaneous problems. Now and then the car won't lock with the key, alarm randomly going off, won't go off even with the key in the ignition or the car actually on. (this has happened a few times and randomly stopped after trying for 10 minutes) Around a week ago it seems there's a beeping sound coming from the boot area, whenever the car is locked / unlocked? I've changed the key battery to a fresh one also.

Any ideas?