Tata Indicom plug2surf complaint

I purchased a Tata Indicom plug2surf through ichoose (Application form no. ET00023082)and paid by credit card, with the impression that I will receive the device in 3-4 working days. 7 days have passed. The device is not here. The telephone number they supplied me seems to be invalid and so, their automated customer service rejects my call. Calling other numbers has been a harrying and fruitless experience. Now I just want my money back. I cannot wait any more, as I will leave for a month's vacation on 2nd.