Hi Prissila! We’re sorry to hear that the Rani Zoya Necklace was too short for you. There are extra links on it that should allow you to change it from 18” to 21”, but we recognize that there are different preferences when it comes to where necklaces sit. We would be happy to issue you a refund as long as we receive the necklace back in its original condition within 60 days of purchase to the address that can be found in our refund policy at the bottom of our website. You may ship your return back through any carrier of your choosing. Please include your order number, packing slip, or receipt, and also your contact information (name, address, phone number, and email) in the package to ensure a smooth return process. If you have any further questions or concerns, feel free to reach out to us through our Live Website Chat or by emailing us at support@tenthousandvillages.com.