Burger King Won't Refund My Money

I made a contactless purchase at Burger King in Optimum Mall on July 31. The cashier informed me of a payment issue, and I had to rescan my payment. After rescanning, she mentioned there were two payments, with one pending authorization that would be refunded within 24 hours. I spoke to them twice over the phone, and they told me the accounting department was handling it. Despite the distance, I visited the Burger King branch at Optimum Mall on August 18. I spoke to a manager, and he informed me that they had not been notified of the issue. Had they known, they could have investigated and corrected it promptly. Now, you've made an incorrect withdrawal and charged me twice. Error 1 - You promised a correction within 24 hours, but it was never done. Error 2 - If I hadn't followed up on this, it might have been concealed, and I would have been deceived. Despite my calls and notifications, I haven't received any response. It has been exactly three months. What kind of business is this, what sort of company is this, and what kind of customer service is this? I have made numerous calls and sent emails to their official channels, but I haven't received any results. From now on, I will share my experience on all social media platforms (YouTube, Eksi Sozluk, Twitter, Instagram) to expose their poor handling of financial matters.