I signed for a package delivered by FedEx and it turned out to be an iPhone X with an invoice for $999. It says refer to your Device Installation Agreement for important information, terms and conditions, which of course I don’t have access to since I didn’t order it. Presumably they are going to bill me monthly for the cost of the iPhone, probably broken down into 24 installments. I have heard the Verizon customer service can be a bit frustrating to deal with. I would appreciate any advice on how to proceed. I would like to return it with the least inconvenience as possible.