1. If the user spends no more than 7 natural days after purchasing the course of Programming Cat, he can get a full refund without reason. If it exceeds 7 natural days, you need to contact customer service for a refund.

2. If the course is purchased, the user can apply for a refund because of the programming cat. In this case, the refund amount will be fully refunded to the user.

3. If users can't attend classes normally due to their own reasons after purchasing the course, they need to contact customer service for a refund. In this case, the refund amount can be deducted according to the specific circumstances.