It is an Excel issue and can be down to an old version of Excel and does happen occasionally.
To separate out the column headings in your excel spreadsheet simply follow this guide:
- Highlight column A
- Click on 'Data'
- Then 'Text To Data'
- Select 'Delimited', then Next
- Untick 'Tab' and tick 'Comma' (as commas are separating your text in column A)
- Click on Next then click on Finish
Your Excel spreadsheet will then correctly be displayed in columns.