My Car s electric Window goes down, but doesn t go up?

I own a 2003 Honda Accord LX and I just got it recently. The dealership took the car back to look at a locked door. I went to pick it up after they fixed it now the car window on the driver side rear door doesnt work. It can go down using the master driver side switches for all the windows but the switch wont make it go up. Why is that? The dealership told me that if I get a new panel that fits on the door with the little window switch that plugs into a plug in the car it will start functioning normally. Is that true? What can I do to fix this window?

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