I unsubscribed last year but I still received the bill

If you don't want to continue a subscription you need always to cancel that subscription in time, see the following Apple articles:

If you want to cancel a subscription from Apple

If you want to cancel a subscription from Apple - Apple Support

If the subscription that you want to cancel is not listed

If the subscription that you want to cancel is not listed – Apple Support (UK)

See -> Delete apps on your iPhone, iPad, and iPod touch

Delete apps on your iPhone, iPad, and iPod touch - Apple Support

• If you delete an app, it doesn’t cancel in-app subscriptions that you might have. While deleting an app, you might see a Cancel Subscriptions option. Learn how to cancel your subscriptions.

Read also Express VPN SUBSCRIPTION PLANS

ExpressVPN offers a 12-month subscription plan.

ITUNES TRIAL AND SUBSCRIPTION DETAILS

If you subscribe via iTunes, your Apple ID account will be charged on the last day of your free trial.

Your subscription will automatically renew at the end of each billing period unless you cancel it at least 24 hours before the expiry date.

👉 Manage your subscription or cancel anytime in your App Store account settings.

Any unused portion of a free trial period, if offered, will be forfeited when you purchase a subscription.

Have you check ⤵️

If you don't want to continue a subscription you need always to cancel that subscription in time, see the following Apple articles:

If you want to cancel a subscription from Apple

If you want to cancel a subscription from Apple - Apple Support

If the subscription that you want to cancel is not listed

If the subscription that you want to cancel is not listed – Apple Support (UK)

Try to -> Request a refund for apps or content that you bought from Apple.

Request a refund for apps or content you've bought from Apple – Apple Support (UK)

Click here for more support and assistance.