Tata DoCoMo Prepaid Service, Karnataka — being charged even though not using internet

Address:

Belgaum, Karnataka

Sir (?)

its fine ! initially you charged me for browsing internet as according prevailing charges,its not my concern here.
But once loged out and not using internet further anymore then how can you charge me eventhough i am not connected to any other webs through my new mobile for the very next day with frequent display of messeges of being charged for browsing which i never did.

and you people(customer care executives) are simply unprofessional while conversations,they never shown interest to understand my problem and intensity to help me out instead at times nobody attended calls also.

its totally disgusting for me,please maintain the goodwill and loyality which tabood by famous by tata's.
i just want my money back,thats it!!!