Tata Docomo — No response from docomo customer care regarding call tariff change in call rate refund

Address:

Chennai, Tamil Nadu

Dear sir,
My mobil number [protected], i have recharged for rs.123 on november 7th.. I already have given an complaint regarding this but till now they have not changed my call rate tariff and dint yet refunded me my amount..! Docomo customer care called me on november 8th and said me that they will change the tariff for me an wil refund my deducted extra charged amount but till now they have not refunded nor changed the call tariff.. Sir i kindly request u to please change my call rate tariff and refund my amount ... Thank you