If you want to cancel your Total Adblock subscription, the first thing I'd suggest is checking where you purchased it. I wasn't sure about this at first either, because uninstalling the app doesn't always stop the subscription or future payments.
Start by visiting the official Total Adblock website and signing in to your account. Look for the account, subscription, or billing section. If you see an option to manage your plan or turn off automatic renewal, follow the instructions provided on the screen. The exact steps may vary depending on your account.
If you subscribed through Google Play or Apple's App Store, you'll usually need to cancel it through the same store instead. So, check your subscriptions there if you can't find a cancellation option on the website.
Once you've completed the cancellation, look for a confirmation email or check your account to make sure the subscription won't renew again. Keep the confirmation for your records, just in case.
One more thing: if you've already been charged and want your money back, cancelling the subscription and requesting a refund are two different things. You may need to contact the official support team to ask about refund eligibility.
I hope this helps! If you're having trouble finding the cancellation option, check which website or app you used to buy Total Adblock first. That should make the next step a lot easier.