I assume the service charge is monthly, so you will be up for $1098 + the $100 deposit. I have no idea what the rules are in your country, Fido might make you stick to the contract. But hopefully you can just cancel as soon as you can, and maybe they'll just charge a cancellation fee. Certainly do something as soon as you can. Leave the phones in their boxes, don't even open the boxes. Even though they are the reason you signed up. Willpower.