Harvey Norman
Lounge suite not good quality

I purchased a lounge suite form harvey norman 10 days ago... however im not satisfied, its simply not a comfortable lounge i have been testing the suite, and im not satisfied? can i do anything to get a full refund... its simply does not fulfill its purpose, NOT a comfortable leather lounge... comfort level is a 0"... back hurts... want a refund as i paid cash outright. Im not even sure if it was made in australia? what level of foam is used? Very uncomfortable leather lounge, Can i demand a refund, as its unfit for its purpose.
Thanks