Help the Flannigans Rebuild Their Home

Hi we are the Flannigan's. In 2018 we bought our 1st home. Recently we noticed in our back room the wall that is back there was moving. Dj noticed and we called somewhere that fixes foundation they removed the make shift wall and saw behind it the foundation had slipped tremendously. We were totally unaware of the actual wall that deteriorated and are getting no help from out home insurance or inspection people that inspected the house because it has been too long since it was inspection. The company we had look at it said this was definitely something that was happening before we bought the house and it was hidden from us. After getting a few different quotes we found out it is going to cost close to $20,000 to fix. We are going to have to leave our house for 2 weeks during the process. Our house is going to need jacked up and supported and our back porch and back yard all dug out. All of this costs an outrageous amount of money. DJ & I both work full time and our kids are in any sport you csn think of. Anything to help rebuild our wall would be greatly appreciated