So I replied to the email today addressing it to the receptionist and old T. I also mentioned I wasn't sure who I was communicating with due to the message being from X on behalf of ____ and said that it was ok whoever I am speaking to but I would prefer to be honest about it. I felt so much better for doing this rather than just letting it go. However, I received a quick response saying that it was a technical issue and I'm not sure I wholly believe it. It seems to me yet another example of how Ts always come out on top while the client is always the one at fault. I will definitely be extra cautious than ever with Ts in future.