I have to say, i've never heard this problem before, are you still receiving the actual messages despite the greeting thats played back?
Without being able to look into your account, i can't tell if there might be a configuration which you may have enabled which could explain the behaviour. Can you please contact us via email on firstname.lastname@example.org with your registered phone number and we'll be able to look into this further.
We've just replied to your email support request and personal forum thread. Please consult via the email support thread to avoid conversing in multiple places.
We've received your email support request and just replied asking for more details so that we can investigate further for you.
Please respond via email and we'll take it from there.