Nasaka — Water purifier

Few month back I have purchased Nasaka xtra sure purifier. Now membrane need to be change then I called customer service then I realised such a disgusting company. Zero customer service. They do not have membrane, they are providing one person number when I called that person he provide another number. When I called that number he provide another number. Finally membrane not available. I wasted my money. So want to highlight do not purchase Nasaka product.