Pathetic service from Samsung head office

Purchased a Samsung note 20 in September 2020. Encountered a battery problem which Samsung approved a exchange. Received new device in October 2020.experienced same problem with 2nd device. Took it in in November 2020. Device was approved for exchange in December 2020. In January called for updates on my device and I was getting the run around. I called every 2nd day and I have to repeat the same thing and give the same info. All they would say that they awaiting for management for a signature or they don't have stock or awaiting for a upgraded unit cos no stock. They would promise to call back with feedback but that doesn't happen. It's now Feb and still no feedback