Forward dental Screw up my root canal Racine Nationwide

 The first thing they told me i need a root canal And they told me my insurance paid 50% and a last time I and ding paid around 800 my insurance paid lake 250. I went to a other dentist to try to put crown and take X-rays and he said is no way to put a crown because the dr wend he do my root canal he drill to dep tru the bone. so the filler is touching the bone and is probably get infection and my gums and my teeth isn't good .we have to pull out I want they fixed my problem thank you