That can happen to anyone: You buy something with a firm conviction and realize afterwards that the product you bought does not meet your expectations.
If you are a a consumer (according to § 13 BGB) within the European Union we grant you on all items that you buy from us a 30-day right of withdrawal. As a commercial customer within the European Union you will also receive full 30 days return policy.
The only exceptions are goods that have been manufactured to your specifications.
You can find more about this in our Refund Policy.