Enza Home Took My Sofa Armrest for Repair but Has Not Returned It for a Month

I discovered that the staple pins used to secure the piping on the armrest of the sofa set we bought from a brand called Enza Home had started to come loose. I noticed this while trying to figure out where a small object my baby was putting in their mouth might have come from. After calling numerous times, they finally sent someone over only after I explained the potential life-threatening danger. The person who came said the armrest needed to be taken away for repair, so they took it. However, it's been over a month, and the armrest is still lying on the floor, as seen in the attached image. Despite repeated follow-up calls, all I get is “We’ll get back to you,” but no one ever does. How can a company capable of producing hundreds of sofas in this time not fix a single armrest? We already realized the poor quality when the fabric started pilling shortly after purchase, but by then, it was too late.