Emergency root canal

Hi my name is Malindi, and I am fundraising for 3 emergency root canals. A few years ago I needed 3 fillings. Since they were all next to each other we decided to go ahead and do all of them at once. The Doctor did a poor job filling in my teeth. She drilled too much, too deep and made the fillings way too big. I went back to explain my concerns and she in conclusion said nothing is wrong and brushed me off. I have since then spent years trying to fix what she messed up. Unfortunately, the damages are irreversible now. One filling is fractured and keeps fracturing because the filling is too big, my tooth is now decaying underneath because of this, causing it to hit a nerve. I need/ would like the funds as soon as possible, for I am constantly having headaches due to all the tension on the left side of my mouth and constantly in pain since its hitting a nerve. This would help me out a lot, I don't have any dental insurance nor help. I'm a server and the season is extremely slow right now. This is very urgent I can't stress that enough.

Thanks in advance for the help!