I am having problems trying to delete a custom toolbar
from my excel file. It should be a simple matter of
deleting the toolbar from within the customise box, but
this does not work. When I re-open the file the toolbar is
created again.

I have tried deleting the toolbar from the workspace
instead of the file, but this does not work either

There is no VBA code in the file that relates to
manipulating any toolbars. This toolbar is also not
created by an add-in, it is a toolbar that was created by
a user of the excel file.

How can I get rid of this customised toolbar?