Airtel Broadband — improper billing.. rude customer care

Address:

Hyderabad, Andhra Pradesh

Hi all,

My Name : Bapi reddy, my Airtel Account Numbe is : 14703327,my contact number : [protected]

I was a loyal customer to Airtel, I airtel's subscriber for Broadband, telephone, mobile, DTH and I also had Airtels' shares. however everything my faith completely changed in the month of july 2010, when airtel changed my connection with out my approval. (i asked for change of plan but also insisted that someone from airtel should infrom be before the plan change, for which the customer care agent agreed aswell). however, without my notice the paln was change on 5th july. when i called them to verify the same.. no go.. i spent close to 30+ hrs making 40+ calls to airtel no go..
whenever i asked for a superviosr they kept me on hold for 30+ mins and disconnected the call... it happend more than 10 times.. later got confirmation from one of the customer care tech that.. the issue was coz of miscommunication from airtel and i wont be billed for this.

again in the month of Aug 2010, i received a bill of 3500/- where in my plan is of 499 per month.
initgially i called on today (21st aug) spoke to a tech named Shanker.. gave me the complanint number as : 36644288, did inform me that.. airtel will check for it.. and will resolved this by 27th aug.. also informed me that.. i dont have to pay bill till aitel fixes the issues.

as i had a bad experince, called airtel again at 12:12pm, got accross a RUDE customer care tech.. who actually wants to fight with me.. didnt not tell me what is documented under the complaint number.. upon asking many times ( i had to shout)- then i came to knw that.. the previous tech did not document everything what he told me.. (currently i am on call with them.. on hold for 20+ mins..as i asked for a superviosr.. i am 100% sure that.. they will disconnect the call after some time).

the problem is that.. the agents say something on call.. but docuemtn nothing.. for which i had to have a hard time.. whot to complaint regarding this...

What is the process to escalte the matter.?