Help needed My alarm keeps going off

[Ricky k]

Hi guys 

I'm new to this site,in need of some advise,when I open my 2010 WRX STI remotely sometimes the car hazards start to flash and the alarm light inside flickers like made and then I get a notification to my phone saying alarm is going off,there is no sound.its been going on for a few months now and before long I will run out of notifications to my phone as I only get 100 a year for £100 and so far I've had like over 50!

ive replace key fob batteries and the car Battery but not really helped,any advice welcome 

thanks 

Rick