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Hi I have bought blackberry sprint 8830 world edition. after purchasing my mobile when i sent SMS for the first time . I am being charged Rs 5 for sending message to even local no's.when i called airtel customer care they are saying i am sending the message to 0019028750609. but i didnt .The messages which i sent might be going to this no.I checked my message center no its indian but i dont know how to remove the above no from my phone...and where its ...so that i can send sms to my friends and family with local call rates.....please some body help me.