Additional Study Information: We are doing this research to find out the safety, toxicity, and efficacy of intravesical Cabazitaxel, Gemcitabine, and Cisplatin (CGC) in the treatment of non-muscle-invasive urothelial carcinoma of the bladder that has recurred despite BCG use. The purpose of finding the maximum tolerable dose is important for future use of the drug, so as to provide the safest CGC treatment to patients in the future if the treatment is found to be safe, tolerable, and effective. You are being asked to take part in this study because you have bladder cancer, and you may have already failed other treatments or are refusing other treatments.