If you recently stopped service but got another bill, it is likely your final bill. Final charges take approximately a week to process after the stop date requested. The detail page of your bill will reflect the date you stopped being charged for the usage. The bill due date will be three weeks after the bill processing date.
EXAMPLE: Stop date requested 12/14/2022. Final bill processed 12/23/2022. Bill due date 01/13/2022.