Poorly designed bed keeps on breaking

I bought a bed from Coricraft. It is a very beautiful but poorly designed bed. It is queen size with spindly little legs down the middle for support. The bed has been giving endless issues. Coricraft repaired it by replacing the Centre legs with more spindly little legs which are now also broken. I have contacted Coricraft yet again and they have said they can repair the bed at my expense. I understand it is out of warranty but this is not a wear and tear issue. This is a poor design. The store manager has been very helpful but "senior management" is dismissing my complaint. I would like a replacement or a refund.