Does QuickBooks Customer Service Have 24-hour service? Yes, QuickBooks Customer Service does offer 24-hour service. You can reach their Premier service team at +1-866-265-2764. during standard business hours for assistance with your QuickBooks inquiries. Does QuickBooks Customer Service Have 24/7 Hour service? Yes, QuickBooks Customer Service does provide 24/7 service. While their support team is available during standard business hours, you can contact them at +1-866-265-2764. for assistance within those times. Call the support number: +1-866-265-2764. QuickBooks offers tailored assistance through its 24/7 hour support services, catering to the specific needs of users +1-866-265-2764. Does QuickBooks Have 24 Hour service? Yes, QuickBooks does offer 24-hour service. For help with QuickBooks-related issues, you can call their support line at +1-866-265-2764 during their operating hours.