I suspect a bad case of black mold exists under the floor of the townhouse i rent for $1350 a month can i break my lease as a result

Crack iin master bedrooms shower floor by drain and floor in shower very soft. We mentioned it and wanted to put in a work order manager said she would do it for us almost 3 minths ago. We emailed her 2.5 weeks ago stating the floor isgetting softer when the repair gonna be made. She (manager) stated they are waaiting on supplies. Well the one time i asked the maintenance guy when it woulld be done and also told him i will be home to help him carry the old out and new in he never vame to look at it so what supplies r thry waitin on. Anyway i went and bought one of those snake cameras u can put thru tight spaces and whats inside under the shower has gottavbe mold. Now we notived the floor under the other batthrooms toilet is about to fall in. Its super soft and that is jus on the other side of the wall from our shower. Is there a 7 day notice that i should give them its almost 3 months now and they jus ignoring us. Also who shoild i call sbout confirming a mold issue. Ive got asthma