Best Buy MSI Price Not Honored - False Advertising Sherman Oaks CA

This last Black Friday, I tried to buy a laptop from Best Buy, the computer was $500 off regular price. The first attempt, my payment was declined, contacting the bank I confirmed what may have caused it, so I tried a different payment method... Everything from debit card to PayPal checkout were declined. Even buying a gift card was impossible. Spent over 2 hours trying get a hold of support to solve my issue next day (on queue). However, instead I was met suddenly with an After Hours message.

Nowhere in their website is their a disclaimer about chat office hours. Next day I try contacting support again, but now the price of the item had gone up. I tried asking the deal price be honored and stated my case and how it had been impossible to get ahold of support the previous day. The reply from the rep? They they couldn't honor the price, but they could gladly help me placing the order at full-price, and if till January the price happens to drop, I may get an adjustment (nevermind how regular price may be beyond my budget?). Not only that, but I still get online ads promoting the discounted price (even if the ad is being run by the manufacturer of the laptop itself).