i had 199 MTNL triband plan.i had switched it to 590NU.i just called on 1500.for info on that plan.i even dont know abt that plan.then costumer care told me abt 590Nu.so,they switched my triband to 590NU.but one thing they didnt told me was restarting the ADSL modem.after 1 or 2 weeks of usage i just went to MTNL triband tarrif page.then i found that i've to restart the modem.if i wont they will charge of that usage.i think dloaded more than 6 GB last month.how can i give bill for that.....?i was not informed abt restarting the modem..... I'll f__k MTNL.............