Unfortunately, you'll want to request a refund for Walmart; as the games were used, the codes were either used or expired; there are no more physical copies of those games that have working codes. Sony will not replace the expired codes, thus why they told you to speak to Bungie. Bungie doesn't have anything to do with those codes (they were created, handled, and had their expiration date set by Sony), and at the time Destiny 1 came out and was produced, Activision was the production company, not Bungie; Bungie was just the developers. Even with that, the codes worked when they were put into the box and from the point they were sold to retailers, it was even out of Activision's hands. The retailer owned the copy from that point and were in control over its sale, including dealing with defective products due to codes missing/not working. It's unfortunate that the retailer didn't inform you that you were buying just the base Destiny game on disc and the codes wouldn't work. The only way to get the DLC now on Playstation is to purchase it from the Sony Playstation Store.