Did some people get their taxes after their 4464c letter?

I have been waiting for my refund and filed on time (4/10/13) but received this letter 4464c on 4/30/13. I'm still waiting for my refund. After many attempts at talking to someone at the IRS, I finally got someone on the phone today (7/24/13) and was told that they have extended their time for review for an extra 11 weeks from June 27th. I asked why I wasn't notified and she indicated that they've not sent out update letters but the extra 11 weeks were needed because they are backlogged. I'm hoping to have my refund by 9/12/13 (11 weeks). Very frustrating.