Foreigners can't easily schedule surgery. Therefore, if a foreigner wants to get surgery in Korea, it is common to pay a deposit and schedule it.

However, there are times when foreigners have changed their mind and wants to cancel the surgery after paying the deposit.

After cancellation, many hospitals or agents refuse to return the deposit.

In conclusion, even if there is a non-refundable clause in the contract, you have legally entitled to a refund, but in practice it may be difficult to obtain a refund.

Therefore, I think it would be wise to deal with an honest hospital or agent from the beginning.