Who in New Zealand supplies replacement seals for a Breville 800 series coffeee maker

I bought a brew head seal from needapart for my Cafe Roma and it's no good. My original seal was brilliant and I could run really fine grinds without the seal letting go. I used to use an alternative non-pressurised basket too. Now, with the needapart seal, I can't use the unpressurised basket (just won't seal) and even the original baskets cause the seal to blow out. I contacted them and they said that those seals are the correct official seals, but they are miles apart from the original. They also wouldn't take the seal back, even though I explained the situation. My Cafe Roma is now pretty much unusable, I'm going to try and find a better replacement or buy a new machine!! I bought a brew head seal from needapart for my Cafe Roma and it's no good. My original seal was brilliant and I could run really fine grinds without the seal letting go. I used to use an alternative non-pressurised basket too. Now, with the needapart seal, I can't use the unpressurised basket (just won't seal) and even the original baskets cause the seal to blow out. I contacted them and they said that those seals are the correct official seals, but they are miles apart from the original. They also wouldn't take the seal back, even though I explained the situation. My Cafe Roma is now pretty much unusable, I'm going to try and find a better replacement or buy a new machine!!