Vodafone — Postpaid bills

Each and every month, my vodafine bill is faulted. I have to take 10 minutes of my time to analyse and see the break through of my bill and compare it with my plan. Some month they have charge me for voice charge when i have it free under my plan, the next month they charge me for data pack when i have it free under my plan. So than, i have to call the customer care and waste to be precise 37minutes trying to explain them the faults and they try to rectify it after keeping it on hold for n number of times. Since past 45 months each and every time i get a revised bill having a low amount as compared to the original bill.

I wonder, is it vodafone strategy, to give high, unrealistic bills as only those customer who are willing to spare their time to ensure their hard earned money is not being wasted will take efforts to make the correction. Where as the rest will just pay and get in with their busy schedule.

The system cant be faulty enough that you get mistaken bills continuously for 5 months and each time the bill is on higher end and never the opposite.

Also. When asked the customer care how to register a complain on their on site, they say "there is no system for registration of a complaint"
A completely service oriented company has no system to register a customers complain is shocking! Or they do not train their people in providing such information to customers???