Issuu is a digital publishing platform. By purchasing a single issue or subscription you get access to digital version of publication only. The purchase does not include a printed copy of the magazine.
You can read your purchased publications on issuu.com and on your Issuu app under "My content".
To see how to find your purchased content, please see article: Where Can I Read My Purchased Content?
In case you want a refund you should contact publisher directly as you are buying the content directly from them. Read more about refunds for purchased content here.