Sears.com Sears.com cancelled my order for reason of "out of stock" when item was still selling available online. Internet

 I ordered two tool items from Sears.com for their holiday promotion on Nov 24. The Promotion: "Tools Holiday Special! Get this Sold by Sears item at a hot price". This Promotion was advertised as well: "FREE Standard Shipping on orders of $49 or more! Applies to items Sold by Sears AND Kmart."  The items were discounted as was advertised. Two weeks later after having no update, I emailed Sears.com customer service and was told the items were out of stock and not available. Sears.com said they would cancel my order. I went to Sears.com and was able to select both items into my shopping cart. They were now at the regular price.  I went to a local Sears store and both items were stocked at the regular price. When I received my Sears credit card statement in December I was charged for both items that I had not received. I called Sears credit card customer service and was told I would need to contact Sears.com. On several occasions I checked on both items and they were still available.  I believe the advertising scam and what Sears.com did was when they reached a certail number of sales at the special price they randomly decided to cancel subsequent orders even though they had the items in stock and available. I am still trying to receive a credit on these items.