Airtel — No refund has been received after disconnection of Broadband

As promised I didn't get internet for 2 days.after which I decided to disconnect airtel broadband connection.this was within a month .and so they were supposed to refund the amount . Starting the were attending my calls. They asked to wait for 45 days. Disconnection was done on January, now it's March, till now they are just giving some excuses and cheating me.Now their employees are misleading me with wrong information s.i feel cheated.my money is with them.this is shameful for Airtel services