My husband and I recently received a letter of deficiency from the IRS for year 2007. We had our return prepared at an H&R Block office (we used the drop-off service) but there was a problem;the return that they gave us at the time and the return that the IRS has on file are 2 different things! The one we thought was filed included all of our income,however, the one on file with the IRS does not include any income but my husband's. We did not purchase the "piece of mind" guarantee from them and we are being pushed by one of H&R Block's preparers to sign a letter 5564 notice of deficiency waiver...is this a good idea? H&R Block is telling us that they may pay for some of the interest but it's been about 8 weeks with no response from them and we have to take some action by the end of August.