I-On — Internet is not good and problem with Monopoly in

It's been 11 I am using the internet service from the time it was SSV later it became D Vois and now ion from past 3 years I am using from ulwe sector 17 where the internet is pathetic and they have a monopoly in the building for internet where as in I can't switch internet and after frequent complains they are not responding and where they just give lame excuses it's been past 3 years the internet is not good nor the company office they switch off as per their choice