Please Help to Solve this Problem..

hey hi everyone, i’m frm India. here in India online shopping websites have lured us for buying dell aero at very cheap prices, i think lot of people have bought it online. but now all of them are facing lots of problems due to this phone.
1.first of all this phone has locked access to everything we can download limited apps from Google market…yes android market because its not updated version, have 1.5 cupcake version and it doesn’t allow system to be update…there is no option to download update to operating system in mobile. so it doesn’t allow any root app like z4root or superoneclick to be downloaded from android market…neither we can download it on desktop and transfer it to phone…it is of no use because it is not allowed to be installed in phone..
2. we seriously want to upgrade the android operating system but cant do it..
3. there is a urgent to need to root this phone because we have very limited access to super rights…. it is like we are provided with a desktop as a guest account…
4.it keep on sending messages to some invisible number “for sure ISD” costing me 5 rupees. i cant stop it form doing it. it has one app named AT&T navigator, for sure this app has something to do with this messages sending. please help to as to how to stop it sending messages by its own
so i thought going online and asking for help form you guys….you guys are expert and i know you will surely help us
thanks…
Answer #1
Suit a file against seller’s simple. . .
Answer #2
Suit a file against seller's simple. . .
Any Alternate Option???