I'd recommend rgm my dad has had them on his mercs and they're good quality. Here's the link to the q2 one:
https://rgmautomotive.co.uk/product/abs-rgm-rearguard-audi-q2/
Funny enough I had an auto technician come over, he run a diagnostic on the car. All ok no problem with my alarm he reckons it’s scum bags driving around with a scanner to see if any car opens so they can steal it.
thank you for your advice Steve Q