A family of Microsoft word processing software products for creating web, email, and print documents.
The handwritten notes may have been inserted as a text box Behind Text. If you can select the edge of it, you can delete it. Or you may be able to select it using the Selection Pane, which you can open from the Arrange group on the Shape Format tab.
It's hard to tell much about your document from a screen shot. You can upload a sample of the document to OneDrive or another file-sharing site, make it public, and post the link here, and then someone can take a look and see what's going on.