Arrived on site, was given code of 6950. Tried code on all 3 key boxes behind the building. None of them opened when supplied the code. Informed front office staff and asked if they had another code or someone I could call who might have the code. They did not and said their manager was out sick and couldn’t be reached. Informed them that it would be a $99 dispatch fee since we couldn’t perform the maintenance. Staff informed me they would call the manager when he was back for payment and rescheduling. Staff did not have filters to replace at this time either.