QuickBooks Care Team support hours are from Monday to Friday from 6 A.M. to 6 P.M. and Saturday from 6 A.M. to 3 P.M PT. That being said, if you have called within the support hours and you're not seeing the chat or callback option, there can be a data-related issue in your browser.
Also, you are welcome to share any concerns or questions here instead of calling or chatting with our live agent as long as it doesn't need any verification from your QuickBooks account. This is because don't have the tools to check further your account details.
I've added this article for your future tasks about monitoring your business using QBO: QuickBooks Resource Center. It contains topics about payroll, taxes, and financial management to name a few.
Please don't hesitate to tag my name in the comment section below if you need further assistance or questions. Take care.