How Suspend home internet temporarily?

Hi Goli

Sorry but you cannot, you need to cancel it and return the modem

1- Log into your account and go to Manage.
2- Click on Unsubscribe.
3- Scroll to the bottom and confirm by clicking Unsubscribe.
4- Tell us why you are unsubscribing.
5- Enter the date when you want Home Internet service to end.
6- Click Unsubscribe.
7- On the next screen, download, write down or print your return ID number and follow the instructions for returning your Wi-Fi modem.

https://fizz.ca/en/faq/how-do-i-unsubscribe-from-fizz-home-internet

Important: You have 15 days following the date you unsubscribe to return your Wi-Fi modem, or else you will be charged the amount of $150 (plus applicable taxes). Detailed instructions will follow.

https://fizz.ca/en/faq/how-do-i-return-my-wi-fi-modem

And

https://fizz.ca/en/faq/how-do-i-find-my-return-id-number