What rights do I have when making a complaint?
If you have received a defective product, you can ask for its repair or replacement (this is called supplementary performance). It is not possible to immediately return the products and demand your money back. The dealer must have the chance to fulfil the contract and give you a faultless product.
If he does not do this in time or refuses to do so, you can withdraw from the contract and demand the money back. Exception: If the defect is minor, you cannot cancel the contract. You can also demand a price reduction to get a part of the money back. This makes sense if you can use the products despite the defect.