I could but why would not just buy the disk from some poor person on Ebay when Apple goes out of their way to be annoying. I'm not really in a hurry to upgrade.
Actually I never know where my physical credit cards are because I do everything online and usually the batteries in my phone are dead when I decide I want to something like upgrade. All my purchase and CC info is actually on record here at Apple so it wouldn't big deal to download the newest operating system.
I hate calling because I waste a lot of time on hold and finding the correct contact number. I spent probably 20-30 minutes on Google and Apple trying to figure out how to upgrade the operating system before I arrived at this site.
Apple doesn't think these things out. Here's the place this information (phone number) about contacting Apple to get the Snow Leopard software should have gone.
Look at this:

There’s no need to visit a store, bring home a box, and install a bunch of discs.Oh right! yeah- sure!!! Just click the Mac App Store icon on your Mac. Buy OS X Mountain Lion. And your Mac does the rest. Follow these steps to begin your upgrade.
Step 2:
While you have the About This Mac window open, check what version of OS X your Mac is running.
If you are running Lion (10.7.x), you’re ready to update to Mountain Lion. Go to Step 3. If you are running Snow Leopard (10.6.x), update to the latest version of OS X Snow Leopard before you purchase OS X Mountain Lion from the Mac App Store. Click the Apple icon and choose Software Update to install Snow Leopard v10.6.8, the latest version. And if you are running anything before OSX10.6, you can go to the Devil because you are not upgrading often enough and paying us money on a regular basis. So if you are looking to buy Snow Leopard here, tough luck Buddy!