As soon as you receive the package, always check the integrity of the contents and report us immediately if there are any signs of damage or tampering. If you have received a defective item or the wrong product, we will send you a new product with free shipping and refund you the shipping costs equivalent to the initial shipping costs. If the item is out of stock, we will still refund the full price. For EU customers, if your case has been mistreated or we have not reached a final solution together, you can finally file a complaint with the European Commission's online dispute resolution at http://ec.europa.eu/odr