购买的域名被退款是怎么回事

import requests

def check_domain_status(domain):
    url = f"https://api.domainregister.com/check?domain={domain}"
    response = requests.get(url)
    if response.status_code == 200:
        data = response.json()
        if data['status'] == 'available':
            return True
        else:
            return False
    else:
        return None

def process_refund(domain):
    if check_domain_status(domain) is False:
        refund_url = f"https://api.domainregister.com/refund?domain={domain}"
        response = requests.post(refund_url)
        if response.status_code == 200:
            return "Refund processed successfully"
        else:
            return "Failed to process refund"
    else:
        return "Domain is available, no refund needed"

# 示例调用
domain = "example.com"
print(process_refund(domain))