Bad service, half delivery and literally one has to follow up self!

I bought a bed at Cielo Stoneridge. It was delivered in a box that looked like it was in storage for years or returned by a customer as the part were it was opened was now sealed with tape, I start assembling the bed to realise some parts are missing. I've logged a complaint I'm told they are 'Sourcing the missing parts'???? I've told them numerous times, on call and on email I DO NOT WANT THE SOURCED PARTS. Clearly this bed was opened somewhere, I'm pretty sure it was returned to them by another customer. I just want a new bed with all parts in the same box. What should i do with a half bed? Its bordering on a week and I still get, I'm talking to management? Someone better talk faster so you can either deliver a new bed in the same box and please fetch this "half bed" you delivered... or please just give me my money back. Will find another shop to buy one. Can't wait another week for someone to resolve this while we are bedless???