Very disappointed

I bought Russell Hobbs iron in February this year at Menyln Mall branch. I didn't know the iron had faulty as it was the 1st time using it 3 weeks ago where I had bedding to take care of,. In the afternoon again when I iron the other clothing left, the iron decided to just shut itself off in the middle. I took it back to the shop where I bought it as it was still new for any such challenges. When I got to the store, they booked it in with the supplier so to attend to the matter. It's been 2 weeks now since the iron was at the shop. Honestly I didn't expect the supplier to fix the iron as it clearly had something wrong from the factory as it was never been used before until this time. I mean instead of exchanging the iron with the other one, they decided to fix it. Really.... For how long will it last since it was already faulty? This was the 3rd Russell Hobbs irons already bought in the family and there are still working very well, until this one... I really don't think I would accept this treatment, I can't take the iron that proved it had defect from manufacturer instead they want me to settle on that rebuild.... It's either they refund me or give me a new iron.