Earned Income Credit

I would like to know why is it I had to pay to have my taxes done through you guys this year 115$ and I used the free edition. Come to find out I got a letter from the IRS stating I never claimed the Earned Income Credit which would have increased my refund? Why was this not reviewed? Turbo tax fills in the blanks after you enter the company name and number into there system? You blame people saying we entered something wrong but you can see I had earned income even if it wasn’t a lot. Now I have to sit here and wait for another return. I honestly don’t think I using you next year and I have been using Turbo Tax for many years. I see why the IRS would screw up but what’s your excuse!