I think you should write back and say the local office has already made the request, if you know the date it was made, write it there, that all you are doing is following up to ensure that the request is honored so that you can get a decision on your fb case. I also got one of those letters in response to a call I had made in May, but I ignored it because I was already making progress with emails. You should take an infopass to request that the local office make the request again, if all these don't work, pls contact your congressman.