I just received a bill well over Rs 11000 for my MTNL Triband 590 NU schemeamong other things it says Triband usage charges - Rs 10594 for the month of SeptemberI had used my account very carefully in september always restarting at 12:15 and again at 7:45 everyday . Infact at the end of the month i had 20MB balance left from my 500MB according to the Triband Usage site.When i could access the session history i could have proved that my usage was less than 500 mb for the month but the session history page is gone.At the start of October i once got a chance to log into the Triband usage page and it was showing a balance of 300 something MB. This was before the usage page went down. Probably somehow the server automatically changed my scheme to 399 scheme for some period. I guess during this period my bill was also issued and all the Night downloads were also charged . Now when i check my Triband usage it shows 590 scheme correctly along with 450 mb remaining.The September bill also correctly deducts Rs 590 as Monthly Plan Rent.Now I have a Rs 11000+ bill to pay.I called 1504 and they told me to complain at the MTNL Exchange. Has anyone tried that before ? Is there even a small chance that they will act on complaints ? If anyone has succesfully complained at MTNL please reply.Also i think some other MTNL NU users may also get such astronomical bills this month. If anyone else has the same problem please post your bill amount here.