Hi @QUALITY COOL,

You'll need to customize the layout of your invoices so it includes your company's phone number, fax number, as well as email address. 

Here's how:

1. Go to the Customers menu.
2. Select Customer Center.
3. Move to the Transactions tab.
4. Click Invoices.
5. Search for the invoice you want to print, then double-click it. 

Now you're on the Invoice page. Proceed with these steps:

1. Tap the Formatting tab.
2. Hit Customize Data Layout.
3. Press Basic Customization.
4. Under the Company & Transaction Information section, tick Fax Number, Phone Number, and E-mail Address.
5. Click OK, then OK again. 

Take a look at this article for additional information on customization: Use and customize form templates. It includes the steps on how you can duplicate, import, and export templates. 

Let me know in the comments below if you have other concerns with templates in your QuickBooks Desktop. I'll assist you as soon as I can.