Best Buy Not honoring price match from their own internet pricing South Richfield MN

I ordered a product and when I went to pay online, a pop up appeared stating a $9 dicount off regular price if I accepted a previously opened box.    When I received it, their sticker on the box showed it was either a returned order or factory refurbished and it was $30 some odd dollars cheaper than what I paid. 

I went online and saw the same product had gone down in price $20 for either an unopened box or opened  box.  It was a $20 price reduction across both types of order.  It makes no sense to deny my price match since the main price went down $20.  This is deceitful practice and I will never shop Best Buy again.