This would be a major undertaking and requires special tools. Your washer has a "Clean Tub" cycle which you should use instead, as instructed, with a special purpose detergent such as (many alternatives are available)
http://www.affresh.com/our_products/affresh_washer_cleaner
You may need to do this twice over if the washer has not so been treated for a while.
If you are saying you have done this and it did not succeed, seek specialist advice from Samsung support.
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