According to the Help Center on the official website, www.target.com, to close your Target account, you should follow these steps:
1. To delete your account, you should contact Target customer support. You can do this through their Help Page or by calling 800-591-3869.
2. When you reach out to support, have your account information ready, including your email address and any other details they might ask for.
3. Once you send your request, it may take some time for Target to process the deletion. You will get a confirmation when your account is fully closed.