Hi !
I just saw your project, and I found it quite interesting. When I tried to export my own contacts from Google to a CSV file, I had all the entries in separate cells when I open it on MS Excel. However, it cannot properly render the Greek characters that I tested.
You can try uploading the CSV file to Google Drive, and then open it with Google Sheet. From there, you can download it as an MS Excel file. It works for me.
But if it doesn't work for you, I can write a script on Python to make a small app that could read the CSV file and arrange it properly for you. This way, you don't need to share with me your contact list for own your security.
Please send me a message if you would like to discuss further.
Thank you in advance.
Best regards,
Tristan