If you have signed up for Tact via the App Store and would like a refund and to cancel your Tact account. Below are a set of instruction that may help you.
To get a refund from the Apple Store you can follow the instruction in the link below,
If you wish to cancel your Tact Subscription you can do so by following these steps, also attached is a link with photos and more detailed instructions.
Settings > iTunes & App Stores > (select) Apple ID:username > View Apple ID > Manage > (select) TACT > Automatic Renewal.
Please let us know if you have anymore questions.