Nextra — They failed to give me advertised net speed

Address:	New Delhi, Delhi, 110059
Website:	www.nextraworld.com

Its have not completed two days of their service and their wifi connection is simply ridiculous and i can't even log in to any page,
They promised a speed of 4 mbps but i was getting only 300 kbps and now that too has blown away, and complaints to their customer care was never reached because the bad no. Never works out, it seems a scam rather than a company, now i want my all money back with compensation.