I have a Netgear WNDR3700 wireless router.  Every internet capable device in the house runs via this router either via LAN cable or WiFi.  In other words all internet traffic in our house must go through this router

The usage meter says we have used 11GB,

Telecom says we have used 40GB and now we are on dial up speed (actually not that much slower than normal).  The Telecom help desk said it is unusual to have such a large discrepancy between the router and their records

So should I believe my usage meter and tell telecom they are mistaken?  Note I am not bagging telecom, but I am a little skeptical.  Any helpful info much appreciated.