Hello again Ramez,

It's great to have you join us here in the Community again and, as always, I want to make sure you have the direction you need to manage your books in QuickBooks Online. I'm here to help.

With a bit more detail about what you're looking to do with writing off invoices and not showing overstated collected on them, I'm confident we can steer you in the right direction for recording this in your books. It seems to me like you might be wanting the steps for writing off bad debt and want to know how that will display in your QuickBooks accounts and reports. I've got a great article here that walks you through the steps and can get you started with this process: Write off bad debt in QuickBooks Online

If that's not what you're looking for, I invite you to contact QuickBooks Online's support team to explain your situation. Depending on what you need, the agent can help you navigate handling the transaction in QuickBooks or let you know if there are other sources you may need to consult. Here's how you can get in touch with support.

Schedule a Callback or Chat: click (?)Help in the upper right > type and enter "Contact support" into the QB Assistant > click Contact Us > explain your situation > click Let's Talk > choose Get a callback or Start a Chat. Support is available from Monday to Friday between 9 a.m. and 8 p.m. ET.

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Don't hesitate to reach out!