Oh lawdy! I feel for ya. I had a basement apartment in Queens Ny years ago that flooded with sewer water every time there was a heavy rainfall. Wound up coming out on top in court but I can't say it was truly wort the heartache. I lost some valuable shit in the first flood and wound up having to live there for almost 9 months. Albeit rent-free, it was a huge hassle and probably not very healthy. Hope you get this straight. Sending you good vibes <3