Consumer Redressal

i recharged on my phone 9808532361 with rs 250 for unlimited internet plan for one month on 09/02/2013. but on 23/02/2013, my mobile operator tata docomo, activated rs 5 plan on my phone without getting in my knowledge and deactivated my old internet plan which is for one month and also deducted rs 102.20. after making complaint to them they only return rs 79 on 26/02/2013 but they still not refund rs 23 (102.2 - 79) and my remaining internet plan. i kindly request to you please do my favor in above matter.