Shipping, payment and returns
- How and when will I receive my invoice?
- What happens after I return a product?
- I have received my order, but I am not happy with it. Can I exchange or return the products and get a refund?
- I would like to buy a product. Which payment methods can I choose?
- Do I have to pay the shipping costs?
- I have been refunded money but haven't received my book yet. Why?