Do I legally have to pay rent, and what are my options?

I've been living in the same apartment since March 2017. We have had several different owners/property management companies. Our living room runs along the laundry room which is shared by all tenants in the building. Raw sewage has backed up 3 times this year alone and has soaked my living room carpet and closer in pure human waste. A several days before Thanksgiving this year, the sewage backed up worse than ever. It took nearly a week before maintenance finally showed up the day after Thanksgiving. They didn't fix it that first day, and nobody returned until Monday around noon even though there was raw sewage water and fecal matter floating in the laundry room. My carpet was soaking in human waste for roughly 9 days before they got the sewage to go down. Our carpet inside my apartment or outside the laundry room have never been replaced. There is still sewage underneath all the washers and dryers, I requested an abatement but I never heard back from them. What are my options legally?