Consumer Redressal

I bought a TATA docomo max wifi internet dongle on last month. Photon number is 9230007689. Since then my address verification is reported as negative. My connection is at barred state right now. Despite repeated requests they did not completed the verification. They told me that it is too far. But they did not inform that when they sold me the dongle. I also requested them to return my money (Rs 2000) which they took at the time of selling the dongle to me. But they refused to do that as well. Please help.