Tata Swach — Tata Swach water filter

Address:

F 402 Mayflower Park apts, Mallapur, Hyderabad 500076

Sir: I am using Tata Swatch Water filter Silver Ultranano Technology.purifier. I find the claims are false and iron and fungus formation is common and I Have to regularly clean. It shows your silver nano technology is a not functional except for publicity, Please donot try to sell me the idea that it is due to sunlight.
I would like to know whom to approach for spare water purifier bulb and Mesh filter. From Esupply sources I find the delivery charges are outrageous..