I had a different experience. They helped me.
I had gone around and around with the IRS over the same tax filing they said we filed in error but we didn't actually. They could not fix our problem overnite but they did get it resolved where we could not for year (not to mention my CPA who tried also.) I did refer my dad but he is still geting his IRS papers together 1st.
Once he does he's signing up with them. In fact, they were even cheaper than our CPA we paid over time and got the same IRS run around we got.