Buyers need to come back AGAIN

We sold our home to a young couple. They have had 9 inspections. We have had to leave the house for many hours each time, which is a major ordeal with our animals for all of this. They have had 8-17 guests in our home every time. They even took their time hanging out at our table chatting while my husband needed to get in so he could return to work. Their very new agent has used our personal belongings. Now they are claiming they need to see the pipes for insurance reasons after they have had both a plumbing and sewer inspection. At this point, it’s sounding strange to me since they should have all the info they need. Can someone tell me this is normal and it will eventually be over? Haha