Can anyone please tell me how I can escalate a matter of a defect router beyond the first line of feedback by TP-LINK Technical Support.  I reported failure of some ports of my Archer AX11000 router to TP-LINK within its warranty period.  I did receive a response from a Mr. Scarth from TP-LINK Technical Support on 13 March 2023, undertaking to have the router replaced.  Upon following up, I was told that TP-LINK unfortunately do not have stock of the router.  Subsequent follow-ups have resulted in me receiving no response.