Digital River distribution

I've purchased my copy of the student Windows 7 Professional 64 bit through the Digital River provider. The purchase went through, I got the download link but I did not receive a product key from them. My room mate also purchased the software and got an identical email to one I got except her had a key in it. Does anyone know of a direct way to contact Digital River Customer Support? Sorry if this is in the wrong thread wasn't sure where to put this :/