Hi Rachel, I replied at the G forum. Please copy your answer to both places. 
(There in case Jade or someone sees it. Here in case it helps other members.)
I replied: 
Normally not being able to respond to reviews is a symptom of a listing that's claimed in more than one account. I know this listing had or still maybe has other issues, but do you think the owner or a previous marketing company could have claimed the listing in another account?