Andrew Bonwick
Vice President of Product Development at Relm Insurance
Madhav Sheth
CEO of Ai+ Smartphone
Stephen Rose
CEO Render Networks
According to the latest report published by the Telecom Regulatory Authority of India (TRAI), Airtel, Vodafone, and Idea are among the ones to have received maximum billing complaints during October and December in 2016.

With 0.11% to 0.12% benchmark violation range, Bharti Airtel received most of its complaints from the 2G prepaid users in regions including Tamil Nadu along with Chennai, Kolkata, Haryana, and Jammu and Kashmir.
Vodafone, on the other hand, had received the maximum number of violation complaints with 0.15% and 0.13% of its bills from subscribers in Andhra Pradesh and Karnataka respectively.
Moreover, according to the PTI report, Vodafone is the only telco in the Oct-Dec 2016 time period to have received complaints regarding quality issues from its postpaid subscribers in Mumbai circle.
Just in case you are wondering, as per the quality of service norms, the number of complaints received by a telco should not exceed more than 0.1% per 100 bills issued in any given quarter.
In the case of Idea, most of its complaints came from its north-east circle with 0.13% of disputed bills. When other quality parameters were taken into consideration, TRAI found Aircel to be offering subpar performance with call drops in most of its circles.
Telcos offering poor mobile services including call drops will have to pay a penalty fee of up to Rs. 2 lakh according to the rules set by TRAI. Telcos will be penalized should they record over 2% call drops in a particular quarter in one of its circle.