What can we do if the court appointed defense attorney failed to present and evidence and I think, is ignoring our case?

She withheld evidence provided to her, failed to subpoena all witnesses available and never objected to prosecution using information that was deemed inadmissible to the case. She never prepared anyone for trial. We requested an appointment with her for the purpose of interviewing the witnesses, review the case and prepare for trial but were refused service. She repeated the remark, “this is not a difficult case" as an excuse for why she wasn't paying any attention to our concerns, ignoring documents provided to her and failing to subpoena additional witnesses. She did not enter any photo evidence, any unbiased witness' statements and didn't familiarize the jury with the client. There was only one person she chose to interview to testify for our defense. Then, just weeks prior to the trial this witness passed away. Hence, the court decided to throw out/disallow all of his prior statements from being used in the trial. She made no effort to re-strategize and out right refused to schedule a meeting with other witnesses and review the case with us. I supplied photos to her secretary, which she ignored. As the trial was underway, the prosecutor began to use information contained in the statements that were just thrown out and disallowed. Shockingly, she said nothing and never even objected. She was informed of many people she could have sent subpoena but ignored their importance. Instead, she put two people on the stand that she refused to interview at her office or prepare them properly. Then at trial, she allowed prosecutor to belittle one of them and with no relevance to the case. She didn't correct prosecutor when he implied they were bias and just suddenly showed up as witnesses. She knew this was not true but never said a thing.