Horrible after sales experience

An absolutely horrible experience with the after-sales from the company, I bought a headboard about 4 weeks back and was delivered damaged. The gentleman who delivered refused to wait for me to open the package and check and coincidentally it was damaged. For almost 3 weeks now I have been trying to have it returned. Every day I call, a team leader is supposed to call me back and none have done so to date. Its either a team leader will call or they called and were not able to reach me. The cherry on top is that their sales division calls me almost everyday even on my partners phone and they reach me perfectly fine.