Welcome to the Community and thank you for sharing your inquiry with us @mert25-25,
Sorry to hear you've parted ways for the Internet service. Typically all Rogers emails attached to the account are deleted once cancellation is completed. I know you mentioned it's been couple of months, but have you already returned the modem to complete the cancellation?
Just need a little bit more info. to assist you further 🙂.
RogersZia