I understand your desire to get a callback. But before I hand you over, I'd like to offer help.
Aside from our phone/chat support, the Community, also have a trained support specialist that can answer QuickBooks-related questions. That said, may I know what are you trying to achieve? I'd appreciate any additional details that you can provide and I'd be happy to find a solution for it.
In the meantime, you'll want to check out our Help Articles to help you with the tasks and tips when using QBO.
However, if you wish to get in touch with the previous agent, you can set them a request for a callback. Here's how:
Hope you’re doing great. I wanted to see how everything is going about trying to reach our phone support. Was it resolved? Do you need any additional help or clarification? If you do, just let me know. I’d be happy to help you at any time.
Looking forward to your reply. Have a pleasant day ahead!