Asus, worst after sales service, ever.

Is there not a worse rating than one star? I bought an Asus in October 2022. By January 2023 it would not charge any longer. It is under warranty, so no problem, you think? It has been three long weeks. All I got from the retailer (Matrix warehouse) is that the unit is "still under assessment". Seriously? How long does it take to decide whether to replace or repair a unit? What is the point of a "warranty" if the supplier takes the faulty product back from the customer, and then seemingly sit on their hands for three weeks? What recourse do I have? What can I do, other than starting an expensive and time consuming litigation process, to get them to either repair or replace, and do so in a reasonable space fo time?