Lounge suite faulty Bradlows lakeside

I bought a lounge suite in December 2018 , and on the day of delivery I reported immediately when the delivery people where still my house , that the 1 seater is faulty, they tried to fix it 3 times but still not coming right, the 3 seater also had the same issue I’ve been in contact with the branch manager since 2018 till now nothing is happening I’ve made calls to the call centre numerous time still nothing is happening I’ve asked for any senior personal however they said they can’t give me her number I’ve exhausted all channels available to my disposal to no avail I’ve tried stopping the payment however I’m also risking to put my credit record in jeopardy Please help me I’m a paying customer, it’s been years now since 2018 , I really don’t know who to ask for help , I think we have repaired it enough I need my lounge suite replaced with a new one If they can’t please refund me my money so that I can shop somewhere else Clearly they cannot help me with my query However they expect me to pay for a product that is faulty