Flex pay denied 7 days ago and pending charge still there!!

Last Saturday 12/16 I attempted to make a purchase on flex pay for $226 and was denied. That is fine, I understand my credit isnt the greatest. But why in the world was my debit card still charged? Why in the world is it day 7 and still hasn’t cleared? Then I start researching and it appears HSN DOES THIS ALL THE TIME!! Like I need those funds for Christmas. They keep saying they sent over an authorization release which is pure lies because I reached out to my bank which always releases payments early to my account. This is beyond ridiculous that HSN even authorizes a charge when it is going to decline the transaction.