Just go to their website and follow the instructions. Easy to do.
Customer service desk
Service desk or at Amazon's drop box with the instructions on the label you recieved for the return. Customer service is also at store can ask for guidance/assistance from staff they should be more than happy to help. Hope I helped and if you have any other questions feel free to ask me thanks you.
Instructions should be available from Amazon.com when you obtain a return authorization or label.
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