(Not a network guy, so all of this might not even be affected)

Is the Bravo switch set to the correct gateway (i.e. the SYG switch in your office)? You're not just setting it to be the Charile switch are you? (Assuming all of your switches are on the same subnet of course)

That's pretty much the only thing I can think of offhand, (assuming all the cables are good) since everything before that area is working fine. I'm guessing that Charlie's set for DHCP and is throwing out the SYG switch as the default gateway (so anything directly connected to it will get that gateway and thus INTERNET) but the Bravo switch is being set to throw out either itself as the gateway or the Charlie switch. Of course none of this really applies if they're on different subnets, because the gateways would have to be set differently and thus making this entire post rather useless...