LG KG195
Net connection in LG KG195

I wanted to take net connection in my LG KG195 cell phone. I had activated the service by calling to Airtel customer care from where I received the settings. I activated the service of 30 ps/30 KB or so. And since then whenever I tried connecting the net, the reply was connection failed or the other, but my balance got reduced. I tried complaining to the Airtel customer care. But no response from there side too. Please help me with this. Actly I want to connect net to my PC. Do reply.

Thanks & Regards