Persistent Noise Issue with Sofa from Enza Home, Warranty Replacement Ignored

I received my sofa set on 28.05.2024, and from the first day, one of the sofas was making noise. The assembly team took note of it, but no one followed up. In August, I requested service, and the team came to inspect the sofa. They decided the issue couldn’t be fixed on-site and took the sofa away. Two days later, they returned it without fixing anything and issued a report for a replacement. I waited for the replacement for two months, but when I called Enza Home, they claimed the service team had delivered the sofa without any issues and closed the case. How can they close a case after issuing a replacement report? This isn't the first issue I've had with Enza, and customer service is completely unresponsive. They supposedly reopened the service case, but I haven't even received a confirmation message. This is the fourth problem I’ve encountered, and I hope it’s the last. I’m requesting a replacement under warranty for the defective sofa.