Home Center — Dining table set..

I bought a dining set.. Table plus 2 chair and a bench. Few days before lock down but they delivered a broken chair whose frame was broken from inside.. Well I didn't know. I had been under the impresion that it is not assembled right but after lockdown lifted I am after them but they are not responding only buying time. Every time I email.. Have no proper response on call... Shared picture too.. THIS PRODUCT CARRIES ONE YEAR WARRENTY