Most returns can be processed within 5 business days after they receive your package.
Considering 3-5 days for delivery, they may need 10-15 days to confirm your refund. If you have chosen the refund to your credit card, the whole process may need 7-14 business days as your card bank needs to process the refund to you.
Please understand that they need to refund your card bank first within 48 hours. However, your card bank may need 7-14 business days to transfer the money to your card account.
They can't control the processing speed of your card bank. Please ask the card bank for detailed information. They apologize genuinely for the inconvenience caused and thanks for your kind understanding.