Amazon Sellers Central Amazon Fraud and deceptive practices , Internet

A consumer decided they didn't want the merchandise they purchase and claimed it was the wrong item so amazon refunded them their money, but unfortunately the wouldn't force them to return the supposedly wrong merchandise, so in essence they assisted the buyer in stealing from me. But the real problem is their A to Z guarantee, after selling over 23 items and only the one refund Amazon decided to freeze all of my funds for 90 days a total of 1300.00. When i questioned them about it the refused to give me answers or release my funds and most disturbing they refused to make the buyer return the merchandise. After several emails to their sellers central they finally responded as follows. 

Hello from Amazon.com.

Thank you for writing back to us. Unfortunately, we did not receive the requested information from you in the time frame as specified in the Guarantee claim notification e-mail. Please note that we allot seven (7) days for sellers to respond to our claim notification messages. Our original claim notification e-mail was sent to you on Oct 7, 2012, and we did not
receive a response from you until Oct 15, 2012. As such, we have debited your account for this transaction.

We understand that you may not agree with the decision in this case, but we will not be able to assist you further. There will be no further response to your e-mail messages regarding this transaction.

Thank you for doing business with Amazon.com.
Altaf
Account Specialist
A-to-z Guarantee Program