recieved this mail from qubee a few days back:

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got 1500tk for my gigaset modem ( fully working, otherwise they won't take it)

these are the requirements for the exchange:
1. your qubee ID/mail address/phone number
2. working device

**3. if the device is not working or the gigaset cable comes without the lan cable or the other accessories then they are deducting 15% from the returns**

they are also dropping all the previous bills/other charges with the exchange.
IMO...its a very good deal! should go and exchange your unused device asap! 30th sept. last date...for this offer!