Sorry to hear that bro.
Anyone tried installing an ignition cut-off switch? It's a switch that completes the ignition circuit so that only with the switch on you can start the car. This defeats thieves who hot-wire cars or use lock-picks. Put the switch somewhere inconspicious, like under the dashboard or in the glovebox or even under your seat.
Second best thing is to get a good alarm system and install it yourself. Thieves know where most workshops install their alarm systems and they can disable it in seconds if they can find it. Here's a tip, install your alarm in your boot! That way no thief will ever find it in time!