I bought automatic indoor insect control system from Pick and Pay Towers which was not cheap

I bought automatic indoor insect control system from Pick and Pay Towers which was not cheap. I put the batteries in and switched it on at the lowest level to be able to keep it for the month. By the next morning when I was making coffee I heard the machine spraying continuesly. When I felt the bottle it was almost empty. I switched it off. Took the batteries out and retried but still the same. We contacted Doom. They came to fetch the machine but after 2 months we still have not heard anything back. Will never buy any Doom product again. Terrible service.