WAIT TIME/SERVICE QUALITY

Bought a recliner set for my first place back in the beginning of September, only bought this expensive set on the condition that they are delivered in 3-4 weeks. I was told 4 weeks would be worst-case scenario. No real answer as to when stock will arrive like they haven't made arrangements with the supplier. Should you not know when your stock will arrive if you order them from a supplier? Either they don't order the stock until there are enough orders or there's 1 man making these couches from scratch behind the building because man, This is really terrible. Also why keep the stock 'in stock' on the website if you cant even supply people who have bought a month ago