You can cancel your plan anytime by going to Settings → Subscription in your account. Scroll down to see the Cancel Subscription option. Alternatively, you can go to the Settings → Billing tab and click on 'Manage invoices'. You'll open the invoices page in Stripe where you can find all your invoices, and you can also cancel your subscription there.
Important details:
Cancellation takes effect immediately
If you're on a trial, canceling prevents any charges and closes your account right away
For paid subscriptions, you must pay any outstanding overage minutes before cancellation completes
All payments are non-refundable - no credits for unused time or partial months
The subscription ends the moment you cancel through the self-service option.
Cancelling add-on subscriptions
For cancelling add-on subscriptions, go to the add-on and delete the add-on.
In the case of a phone number, go to the agent with the phone number, and then delete the phone number. This will automatically delete the subscription of the phone number, but will keep your main plan active.
In the case of a knowledge base, go to the knowledge base and delete it. This will automatically delete the subscription of the knowledge base, but will keep your main plan active.