Students Complete the practice tests 100% and within 30 days raise a refund

Hello Fellow Instructors,

I am new to the Instructors Community on Udemy, I see a pattern in Few Students.

They sign up for the course, Complete the course in a month (30 Days) and Then Raise a refund request.

And to my surprise the Student even asked questions on few topics and I answered them.

My Suggestion is if the Course is 50% completed then there should be no refund.

Please comment your advices and suggestions.

PFB the Snap of the conversation i had with the student.

Regards,

Zia Ur Rehman