Neat. Here are my thoughts:
1. Don't hide your contact info. I'm not looking to start making prank international phone calls, but by not seeing your contact info I can't see if the lettering is big enough, bold enough, or has a typo in that you might have missed. Also, you're expecting people to call or click so in case this gets stored on Google images or somewhere else, why not have the info visible?
2. With your flash drives I'd probably go with "while supplies last". Unless you're really known for having great deals on flash drives and sell a bunch of them, I'd probably cut out that whole section in favor for a more profitable service that more people are likely to get. Same for the graphic design.
3. I like the icons for your services.
4. I don't see a call to action that prevents me from taking this and throwing it in the trash can. Something like a percentage off your next service or free install with the purchase of AV software would be more likely to get someone to pick up the phone than a generic informative flyer.
Hope this helps!