I have an annoying problem with a game I purchased and i can't reach support. I type in all of the correct info, plus the specs for my MAC, but it won't allow me to upload my System Profile .SPX file, and when I enter my System Profile info manually, it says I still need to upload the file that it won't upload! Do these guys have a phone #? Please help!

At the bottom of the the web page there is a Contact us link. I don't see a phone number there but you have all kinds of methods to contact them. GOG is located in Poland so unless you were from there, it'd be a very expensive phone call.
Best bet is to open a ticket and wait 1-2 days for them to get back to you.