Hello there, @Rajashree.
Although I can't gather sensitive information on a public platform like the Community due to security reasons, it's best to reach out to our dedicated team to address the double debit from your bank. For concerns related to refunds, I can direct you to our Support Team. To do so here's how:
1. Access your QuickBooks Online (QBO) company, go to Help (?).
2. Choose either of these tabs:
- Assistant tab and type Talk to a human.
- Search the tab and click on Contact Us to connect with a support expert.
3. Select the preferred method of contact (phone or chat).
Here's an article containing our support hours and a phone number you can call: QuickBooks Online Support.
Additionally, you can refer to this article on how to request a refund for a QuickBooks product you purchased: Request a refund for your QuickBooks product.
Please return to this post if you have other queries within QuickBooks. I'll be here to help you out. Keep Safe!