Trai — harassment by vodafone

Address:

Chennai, Tamil Nadu, 600087

Hi, i have ported my number to airtel from vodafone. Vodafone wants me to pay an outstanding of 900 plus rupees without raising an invoice all long and threatening to sue me on email for several months. Pls register a complain and investigatei have been contacted by trai and i have given my explanation. I hope proper action is taken on the service provider.. Thx, vijay
Mobile no.[protected]