[Resolved]  Hathway Internet — wrong billing/charging illegal extra amount

Dear sir,
i am a regular customer of hathway for a long time.. this month i received a wrong bill so i hav been calling their helpline no. for last 10 days since march 30th regularly..to correct th bill.
but every time when i called up i was told to repeat my problem to each n every executive there..and then the answer from you side was "mam pls wait i'll make sure that u receive a call back from our billing deptt within an hour or so"
but i never received a call back.
it is the limit of patience that i have to call for around 10-12 times a day..and listen the same answer..everytime.
i have also sent emails to these id but from there also i din't get any answer.
so as the fault is from their side and i m fed of calling this no.40161616 daily.i want to disconnect their service
Since i hav been calling from march 30th to change my plan and i can also state here the names of few of theecutives to whom i spoke
ie.:-
Ms Saroja
Mr. Manjunatha
Ms.Vani
Mr. Nagendra
Mr. Shiva
Mr. Praveen
Ms.Nalini/Nandini, etc etc..and instead of talking to so many people and sending so many mails..neither i got a call back nor my plan was changed.
today their accounts person Ms.Sadiya told me that i hav to give a proof that i spoke to hathway earlier ...
now please tell me what should i do..as i hav records of all the calls n mails done to hathway... and then also they are not contacting me or changing my plan or correcting the bill.
So, as i hav stated earlier also, i wanted to shift to expressway plan from the earlier freeway plan from 31st of march only. and this has not been done so i want to disconnect the connection as i cant take services from such an irresponsible net company who cheat on its regular customers like this.

pleas help me out as they are charging me for the month of april may n june n telling me the bill has been generatedand are not agreeing that i hav informed that earlier.
Thanks n Regards,
Mrs .Khan