Consumer Redressal

im Rahil from Kolkata, few months back i discontinued my internet connection with Tikona Digital networks. i was told that i would get back Rs 900 as soon as i return the devices. and in that month my outstanding amount was Rs 300. so i decided to pay the 300 rupees only after they paid me the 900 rupees for returning the device. after 1 month i got a call from the delhi high court that i have to pay Rs 2000 to close the case that tikona has filed against me . i got scared and paid them the rs 2000 through online. i dont know why did they file a case against when i did nothing at all. i wrote to consumer forum but got no help. i dont know where to go. please help me. i have called tikona various times for this but they never transfer my call to their senior supervisor. this is fraud. please help