Bad service on dud product

I bought a D-Link modem from the store on Saturday 27 February in the mid afternoon. After taking it home and plugging it in, it started up for a few minutes, and before I could even connect it to the telephone line or computer, it switched off and could get no power to the unit to power it on again, I took it back first thing the next morning and explained what had happened. <br> I was very unprofessionally told that I cannot get a new modem, and that the one I bought will need to be sent to head office, and then probably to the supplier for a repair on the unit, which will then be returned to me and it could take up to 21 days. <br> I could understand if this was after a week or 7 days at least. But to have opened a dud product and then returned it within less than 24 hours to be told I must wait 21 days, is just very ********* and unprofessional. I asked why I was not explained this procedure upon purchasing the item, and was given no explanation thereof. <br> Very poor customer service, and to make one wait for over 21 days for a modem repair (and expecting me to take a repaired item, when I paid for a new one) is just worthless. I'll now pay for ADSL while not being able to use it.