I'm sorry you are having billing issues. While you wait to get connected with a Intuit QBO Self Employed support, I would like to forward you some information in hopes that it helps with your billing issue.
QuickBooks Self-Employed makes tracking expenses and income a streamlined and stress-free process. Sometimes things come up when it comes to your subscription that need to be dealt with such as updating payment methods or changing your billing address. I want to make sure you get the support you need.
@Lourdes-Fernandez has provided you with a ton of fantastic resources in their reply above, including the links to reach chat and support for QuickBooks Self-Employed. Reaching out to the team that specifically takes care of QuickBooks Self-Employed customers is going to be your best bet in resolving the issues you're experiencing. Our agents will be able to take a look at your account and get to the bottom of things effectively and efficiently, and in real time.
If you'd prefer to troubleshoot your issues here in the Community, I welcome you to expand on them by replying to this thread. With more detail I'll have a better understanding of what's going on and will be able to provide you with the most accurate troubleshooting steps. Remember not to share any sensitive account details here as this is a public forum.
I'll be here if you decide you'd like to keep problem-solving with me. Have a great day!