A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data
Although it won't reset a sort order, the Clear Filters command will remove any filtering, like that to limit results to a specific customers, without undoing any edits.
From the Home Tab in the Editing section the drop down is pasted below. I include this in my Quick Access Toolbar, too.
Another option is to insert a Slicer Timeline to the table. Select any cell in the Table, then go to the Insert Tab, and look for the Timeline button. 2nd Screenshot below.
Adding a regular slicer you can narrow table down to just a company easily. It is to the left of the Timeline slicer icon.
4 minute video here about slicers.
Mike