Teaching My Daughters to Read

I babysit my children in the afternoon every other day except Wednesday and Friday. So how did I spend my time with them? Most of the time, I let them play by themselves. I tried teaching them reading but to no avail. "Daddy, you are not a teacher." My eldest would say when I tried teaching her. She is quite left behind in her class due to it. I need to find reading tutor for her. Anyone know any good reading tutor around that is as good as those reading tutors at SCORE!?