[Here is another and easier method to reset your router admin password, this tutorial is compatible with D-Link DSL-2640U (ADSL Router). ]
After being billed for 200,000 LBP, a friend of mine contacted me today suspecting neighbors for stealing his bandwidth. After trying endleslly to contact Ogero support to reset the router password and switch to WPA encryption with no sucess, we were left with the only other option... DIY!
The problem with this ISP, knowing that you payed the router's price, it's inside your premises and is supposed to be you propriety, is that they don't provide you with the administrator access over your router.
Additionally, the applied configuration is weak which results in an (ab)used bandwidth.