Consumer Redressal

Airtel does not provide full & final settlement itemized bill after changing service provider from Airtel to Vodafone through porting with the same no. Even itemized bill soft copy also not send by mail and hard copy not received at their mentioned address where they have send three times according to their records. Many follow up done from my side through mail every time asking for payments without receiving the same bill. Why should I pay without knowing my actual uses details.