I'm not sure why anyone would need to "notify you in a couple of weeks" - refunds get processed within a day or two as far as I know.
I suggest you take advantage of the email address (Jim Hafner-Eaton) that I posted a couple of weeks back - he is director of customer service and offered to investigate personally any problems that empeg owners had been unable to resolve through the usual channels.
By the way - and I don't think this applies to you - anyone who has sat back and waited for the rebate to come through automatically is out of luck. I did state quite clearly that it must be applied for.
Rob