I received the return about $1,000 less than the amount I supposed to get. I got the return from TPG PRODUCTS SBTPG LLC ***********64EY. Now, IRS sent me the letter to refund for it. I just went through other threads here and regret that I used them all . IRS said they found an error, and most of them were form 1040/ child tax credit. Is this something you can help?