When you select any cell in your pivot table, a new tab option should appear on your menu bar "Analyse". In the group called "Show" select the "Field Headers" which is on by default. This should remove your drop down selector on "Parts Admin Revenue" (if I recall correctly!)
As for the second part of your question... Pivot Tables should not be manually formatted using the usual formatting tools available, otherwise this formatting will be lost whenever the table is changed. Instead, you should use the "Design" tab (which again appears when you select any cell in the Pivot Table. The standard "Design" options can be modified so you should be able to get it to look like you want. These will remain when the table changes.