Under normal circumstances, Return & Refund of product is not available excepts:

If any product proves to have been delivered or provided for pick-up in a damaged condition, expired, omitted in the delivery/pick-up, or if a wrong product is delivered/ provided for pick-up. Please login to [My account>order history] for Return & Refund request within 14 days of receipt of the delivery or pick-up.
(Note: Return & Exchange an item is not available for Macau Click & Collect service, please contact Customer Service for assistance.)

Customers can also contact Mannings Online Store Customer Service for the return & refund request via WhatsApp service no: (852) 5423 2088 or by email to CS@mannings.com.hk for assistance.