2007 Skoda Octavia Bulbs

2007 Skoda Octavia Front Wheel Drive Manual 93000 miles

Hi,
I seem to be replacing all my bulbs rather quickly, like literally every few days. The car is used as a taxi and obviously in these weather conditions the lights are on alot, but the brake bulbs are going aswell as the stop tail lights and as I said we're literally changing them every few days.I was wondering what's up with it?
Could it be a moisture problem?
Also this time last year the car sustained a minor rear shunt which needed the back bumper replaced, I'm just wondering if maybe as a result the back containment keeps shorting out causing them to go, what do u think?