Why does Xfinity send the equipment weeks before the start date with a move?

I have tried multiple times to get a call back but the assistant does not allow it. I used the Schedule a Move feature thinking it will help me to do it sooner than later. I put in the effective date of the move as Oct 1st. It is currently the 18th of September so why I am receiving an email that my equipment will be delivered to my new address tomorrow the 19th. The previous tenant is still there and I will not have access or the ability to get the equipment. I do not want to be responsible for equipment you erroneously sent out early.