Yes probably not a good idea to give your house keys or any other personal keys giving them access to your home regardless who they are if you don't personally know them and trust them .
Opposite by me USPS has always been great the packages always look like new without a mark . Ups on the other hand always look like they played football with it and or dropped it off a bridge . FedEx has always been good to like USPS .
Sounds like there going to hook you up after you had to jump threw a few hoops .
They probably figure some would of gave up and said screw it .
Good luck man !