Airtel Postpaid number
Discripencry in bill always

I have a airtel post paid number i am using it since last 4 years but i am never satisfied with the servies by the services operator dnt know why does Airtel does it

is it that airtel has got many customers or Airtel does not value the old customer

In fact i am fed up with airtel but i cant change my number that is the reasons why i am with airtel still now

Can any 1 give me a solution to this