Airtel — Wrong billing

Address: Bangalore, Karnataka

1) The billing was 17th to 16th until June 17th. 2) There has been one week billing between 17th June to 22nd June 2015 For the billing cycle 23rd June to 22nd July – My bill says I consumed 9.8 GB – This is accurate 3) For the billing cycle 23rd July to 22nd August – My bill says I consumed 5.5GB But on 4th August it was reported that I already consumed 10G and my speed was dropped down to 2G 4) I was forced to buy smart bytes for this billing cycle. On 24th August after 1 day into the billing cycle again they are telling I consumed 10G – This is completely wrong. 5) Everytime I talk to someone I get different answer. 6) They keep telling me to contact on 17th September to know more details of my one day usage – whereas my bill will not get generated until 23rd September