Here are some things to try before you call us....
Go Flip your Breakers
If a light doesn't work, or something plugged into an outlet doesn't work, here's a few things to check before you give us a call.
If it's a light, try a new bulb. If that doesn't fix it, look at the fuse or breaker in the panel (usually in the basement). If the fuse is burned out only replace it with one of EXACTLY the same amperage. If it's a breaker, reset it. If neither of those fixed the problem, give us a call.
If it's an appliance or something plugged into an outlet, unplug it and try something that you know works (like a lamp) in the outlet. If the lamp works, then the appliance is at fault. If the lamp doesn't work, try replacing the fuse or resetting the breaker. If none of those things helps, give us a call.