I'd like to direct you to our customer support team, dhsy88-gmail-com.
We can only provide the steps on how to cancel your subscription in the Community. However, we're unable to check the charge. You can get in touch with our customer service agents by following these steps:
For reference about canceling the free trial, here's an article: Cancel your QuickBooks Online subscription.
If you have other questions for QuickBooks Online, please feel free to add a comment below. Take care and stay safe.
You won't submit any credit card info to open a trial account.
If you have to open a new QBO account, make sure to click the Buy button to get the discounted price for up to 3 or 6 months. If you purchase from the trial account, you have to pay the regular rate.