Missing a pipe

It was easy to install and it all looks great, but I am missing a pipe one of the 12" pipes. Unfortunately, I did not notice until I had everything else screwed into the wall. I have tried contacting the seller to just get another pipe sent, but I have still not heard back, so I can either take the entire thing down and send it back for a return, or I can buy a pipe myself. Other than that it is great, but I dont see myself ever ordering from the seller again.

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