Did you buy a Memorette micro SD/SDHC card on eBay? Memorette flash memory cards are low end, expensive and slow. They are a discount brand gaining in popularity with consumers who have a low budget. eBay is not the place to buy them, most are fakes. The advertised capacity is not what you will receive. The real problem is there are very few authorized resellers of the Memorette brand on eBay. Buy one from an eBay seller is is unable to advertise they are an authorized reseller and you are almost guaranteed to receive false capacity.
FlashDriveFacts published a very useful and informative article you should read:
Counterfeit Memorette Micro SD/SDHC Cards Fakes. 32GB 32Go Class 10
It is comprehensive, well documented. If you bought a Memorette card on eBay you need to read it!
Fake Flash News - Internet & eBay Fraud 
Dev
February 5, 2012
Hi Alex,
How did you manage to let ebay give you a refund?
I too was scammed by
Seller’s Name: LiuHaiRu
Seller’s Email: haohaozuoren133@hotmail.com
I asked ebay to help me get a refund but they passed me to Paypal. Paypal then suggested for me to shipped it back to get a partial refund , I refused since it would cost a lot sending the trash back, more like an intimidation move to discourage the buyer to get their refund.
Any tips on how you manage to get the full refund?
ALEX
January 2, 2012
YES I BUY AND IT WAS FAKE AND I CAN,T WRIGHT FIT BACK I HAD MY MONEY BACK FROM EBAY PROTECTION
Michael Song
November 23, 2011
I am Michael Song, the overseas sales manager of Memorette, Inc.
First of all I am very sorry for what has happened and feel responsibility that we could not prevent this situation earlier. We have tried to stop those eBay sellers from selling fake products but it was very difficult to restrict them and stop the Chinese sellers usually found from Alibaba.com.
1. Please avoid purchasing Memorette TF 32GB c10 from Alibaba.com
2. Please contact us through the email and phone number before any kind of purchase of Memorette Products and we will also inform you the list of sellers who are selling Memorette original products by reply. Most of sellers who are shipping from Korea are reliable but please double check with us the seller list.
3. Regarding authorized resellers or distrbutors please contact us.
Currently We have few authorized reseller around the world and regarding TF cards there are resellers only in UK and Japan.
4. We will try to update our website and also infom how to distinguish original Memorette TF cards, mostly about TF 32GB c10.
5. The net production cost of TF 32GB c10 with micron + smi solution was above $50 till last month and recently it is going down steeply.
6. Currently Memorette TF 32GB c10 products are all made in Korea.
I am sorry again about your inconvenience.
You can contact me for more information through
Email song@memorette.co.kr
Office +82 2025 7228
Mobile +82 19 588 1007
Facebook http://www.facebook.com/memoretteworld
8F AceTechnoTower 8th, Guro3-dong, Guro-gu, Seoul, 152-780, Korea.