We guarantee optimal satisfaction from all our products. If for any reason you are not satisfied or the product is not performing as it should, please feel free to send us an email from the contact us page. If you prefer you can mail the product back to us at Donnel Inc. Place Skyview Shores Gardens Calgary Canada and we will promptly refund your payment, reserve a store credit for you or replace the product. We are careful about the quality of our product so we do not have to do this. Thank you for your business.