I received a similar letter a few weeks ago, despite my having activated an Ovi store account. I called the rebate services phone number at the bottom of the letter. They sent me to Nokia customer service, which was actually very sympathetic and helpful. Nokia customer services told me to call back the rebate services number. This time, I told them I had been in touch with Nokia customer services, and the person I spoke with immediately responded that she will be processing the rebate for me, and that I should receive it in about a month. So, I'd recommend taking the above steps, and politely asking that they help you get your rebate. Also, I'd suggest you keep a good record of all of your phone conversations, including names of reps, call confirmation numbers, etc. My sense is that the Nokia and rebate folks are not trying to make things difficult, but that there may have been some confusion introduced into this particular rebate process because the Ovi store, as I recall, had not actually been activated for the N900 by Nokia in time to meet the rebate deadline.