Consumer Redressal

My connection was activated on 15 Feb, I had put a Cancellation request on 16, because the speed was less than 40kb at my home, i was promised a speed of 8mbps start. MTS Technician came at my home and confirmed the speed as well. Then I also Had emailed them the same request to there customer care with the bill on Date: Wed, 18 Feb 2015 14:18:12. They even responded to the email that they will get back to me in 24 hours, but they did not respond and did not disconnect the connection, no one took the responsibility, finally i had to fight with several manager and contact the appellate(similar to nodal) they disconnected the connection finally on 25, and now they have sent me a bill for 10 days, which I have not used, this is their fault that they did not disconnect the connection, I have proof of everything, Why should I pay for their mistakes? Talked to floor manager Gurneet. several times, still no response. Worst experience, fake guys. Actions MTS Data card number : 8459639009