Defected Headboard

I am very disappointed in the service that I have received from Coricraft. I bought a Headboard from the Coricraft at the Mall of Africa. We then received the delivery and upon unpacking and putting up the headboard I noticed that there was a button missing on the Headboard. I then reported the matter over the phone at the store that I purchased from and was asked to send a picture of the Headboard which i sent. After a week there was no response as I was supposed to be contacted by the warehouse so that they can come and pick up the headboard. It has been 2 weeks and I have been calling into the store to follow up and every time I am told that I will receive a call from the warehouse which I never receive. I would like the headboard replaced immediately as the quality of the product I received is not acceptable.