MTS / Sistema Shyam TeleServices [SSTL] — Worst of all Network

Address:	Chennai, Tamil Nadu, 600044
Website:	www.mtsindia.in

I bought MTS wi-fi prepaid Dongle with Number [protected], Since i bought this, i am facing drastic network issue. I live in chrompet. There is no network at that place. everytime DNS error comes. It worked fine at few places. later at the same place afr 1 hr of normal usage, browsing speed gets very slow and it takes 15 mins to load simple Google.com. Everytime same DNS error. i raised this complaint many times.they say may be your place wont have network. Then why is the company selling product. Do they mean we have to sit in their company and work. We buy dongle for office work and personal use. if they cant provide proper speed and proper network. there is no use of buying. Seriously i was cheated by the company. Today also i tried to browse. i have net balance. but it does not work in Bangalore. No proper response and resolution from them