I saw a prior post and this exact things happened to me. I cashed in about 20 old paper savings bonds (all a least 5 years hold) and was given a receipt. I was in a rush and didn't check the itemized receipt for each bond but saw that I had two $50 Series I savings bonds (bought for $50 each) from 2012 that should be worth $70 each but it actually showed -$30 interest and I got back $20 each on them. So right now I'm out $100. I called back the bank and actually visited it too. They said "they checking with the home office on how to handle the error". They said it would take 2 weeks but I'm wondering if they just hope I forget. Anyone deal with this type of issue?? Thanks