Extreme III card warranty?

I got 2 bad cards.  One is confirmed bad and i need to retrieve data at DriveSavers.  The other one has message “card is not eject properly” without a reason… I am using Sandisk reader as well.  The tech at DriveSavers told me that I can send both cards back to SanDisk for replacement.  I purchased the card about 6 - 9 months ago.

Please provide instructions on how to get my cards replace.  


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