For purchases where an invoice is required, it must be requested during the payment phase in the notes to the seller or at the same time as the order via Ebay messaging. For tax registration reasons, subsequent requests (the day after the order or later) will be rejected. If you have received the defective product, please contact us as soon as possible via Ebay messaging and we will provide you with the information to best manage the procedure, authorizing you to return it at your expense, which will be refunded if the defect is confirmed. You are responsible for any decrease in the value of the goods resulting from handling other than that necessary to establish the nature, characteristics and functioning of the same. Therefore, if the returned goods are damaged and/or have miss.