Breathe Pure Air Inc

2 people came at 9:00 am and finished not even 45 minutes to do the work and they charged us benefactor fogging for $549 + tax..is this reasonable and my experience for this service is ridiculous. They asked my husband not to come down in the basement because they sprayed something for the molds and my husband asked them if he can see it but they do not want him to go down at the basement because of the spray and they insisted us to go out of the house for 4 hours. When we check our ducts still a lot of dust and they did not do the dryer vent that supposed included in the deal. Very disappointed.