Makro Returns: The buyer beware.

I purchased a Defy 9000BTU Portable air conditioner from Makro on the 12th of February. My decision was based on the "sleep mode" function, which created the impression that this unit operates quietly and continuously during sleep time. When I unboxed and switched on the Unit, it was as loud as a vacuum cleaner (close to 60DB, even on the slower setting). This is not disclosed on the website. I immediately realised that I would not be able to sleep with this noisy airconditioner, as the sleep setting only switches the aircon on and off. I reboxed it the same night I received it and sent for return. Makro does not want to refund or exchange for something else since the packaging has been opened. Even though the product is clearly not what is presented in terms of performance on the website. I have made numerous calls and escalations to Makro yet they continue rejecting the return, even though my conduct aligns to the CPA in terms of returns. The suggestion was even made that I find a "new" box to repackage the Unit and then resubmit a return. Clearly Makro is not interested in finding amicable solutions and only on their stupid "returns" policy. I will never support MAKRO EVER AGAIN!!!