Under EU rules, a trader must repair, replace, reduce the price or give you a refund if goods you bought turn out to be faulty or do not look or work as advertised.
If you bought a product or a service online or outside of a shop (by telephone, mail order, from a door-to-door salesperson), you also have the right to cancel and return your order within 14 days, for any reason and without a justification.
You always have the right to a minimum 2-year guarantee at no cost, regardless of whether you bought your goods online, in a shop or by mail order. This 2-year guarantee is your minimum right, however national rules in your country may give you extra protection.