We had the same thing, when we caught the painter having a family gathering in our garage, the first reaction from our SS was to question why we were on site. (we did get permission from the person who opened up the house to work)
Get an inspector through the house asap, you have the right to as many inspections as you wish. Im also very disapointed with my PD experience, we notice faults on almost daily basis. Our 3 mths maintainence list is getting quite long