Fire Services

I am in a 3 unit strata, 2 units (1 building) owned by the same person are commercial and mine is residential. I have access through this building by right of a common property corridor. The buildings which are detached share only a common driveway to the rear. When accounts come in from the fire services company there are always large bills for what I believe are over excessive servicing to other parts of the commercial building, ie replacement of exit signs, globes replaced too often and other unexplained works. What do I have to pay for when there is only 1 fire extinguisher and 2 exit signs on common property.

Appreciate your help