Really sorry to hear about your flooding. You have my sympathy - we got flooded a few years ago after the local town council relaid the road at the top of our cul de sac & redid the drainage. As the work was in progress my neighbor & I had remonstrated that the new system would not be able to cope, and that in heavy rain we would end up with all of the run off from the hill as soon as the drains started to struggle with the volume. He had replied that as he was a professional & we weren't.......
Anyhow, first torrential downpour and we had a metre of water in the outhouse, the cellar completely full and 18 inches in the garage (it was pre Morgan, & I managed to get my TVR out before the level was too high). Very luckily, the high tide mark was just before the front door, so our living quarters were not touched.
The insurance assessor who came around then started being a pain, wanting receipts for everything that had been damaged. It was at that point that I was really glad that I do all of my insurance through an excellent broker; he took up the cudgels on my behalf and they paid out quite quickly.
You might say that I should have sued the council, but I'm not by nature a litigious person, and the mayor was very apologetic and had the issue put right.
So, Bon Courage mon brave. Lets hope that you can get life back to normal as quickly as possible.