Debra, you obviously have a legal problem. It will not go away by itself. It would appear that you are not at fault, but there's little we can do to help you. In my opinion, you should have contacted the city when this first occurred, and you should have contacted an attorney long ago as well. I realize attorneys are expensive, but if the blame can be proven to belong to someone else, you would possibly have a lawsuit against them. A number of years ago, the sewer backed up into my house. The city found that my sewer line emptied into the main in a manhole. A restaurant on the hill above my home had a grease trap failure and the grease came down the line and into the manhole where it compacted into a ball that plugged the outgoing side of the manhole. The city paid for cleaning my basement and today, even though that restaurant is no longer there, they inspect the line frequently and rod it out. But, you can not just go on and on paying to clean up the mess and then expect the city to pay. They will ask why you waited.