Contact the business and say you want to cancel the contract because you're still in the cooling-off period. You'll probably need to give them details such as your account reference number - check any documents or emails you have from the company.
Check your O2 contract status Log in to your O2 account. Select 'Menu'. Select 'More'. Select 'Tariff and payments'. This will show you your contract length and contract renewal date, even if it has passed.
Canceling a Cellular Service Plan To get out of a phone service contract, contact your plan's customer service. You can also try to sell your plan, contact a different carrier for help, or view your contract for loopholes.
Almost all providers require 30 days' notice if you wish to leave.
O2 end of contract tariff options If you happen to be out of contract with O2 already, it will send you an annual reminder that you're still paying for an old tariff. In these notifications, O2 will offer you a selection of new plans that you could move onto once your fixed-term is finished.
Go to your O2 account and select 'Membership and Subscriptions' Scroll down to 'Cancel Subscription'
If you can't find the text, email or letter, you can contact your provider and ask them when your contract ends. Or, if you have an online account, you'll find details of your contract dates there.