Hello 0819EC. We know the importance of managing your account devices and understanding your bill. Cancellations aren't effective on the day you call us to cancel or return the device, but on the last day of the billing period in which you cancel. This may cause the device to appear on your monthly statements after it's removed. Here's a link with the details: https://www.verizon.com/support/cancel-suspend-transfer-lines/#cancel. Please be sure to let us know if you have additional questions.