Can I sue my home builder for not correctly grading my backyard? It has a negative slope towards the house. I had my home inspected and was confirmed

I have been frustrated from day 1 with maronda homes. I finally had enough and decided to hire a home inspector to confirm my issues. My backyard slopes towards the house. I’m concerned that over time it will just settle more and get worse. I closed in July of 2017. I have complained of this issue many times but they seem to think it is properly graded. I have had many other issues with them and getting them to correct their mistakes is next to impossible. They want to do half of what it takes to fix the issues. I asked for the name of the person who inspected the grading on behalf of maronda, but they won’t give me that information. It’s as if they are making things up as we go just to say the issue was dealt with. I want them to fix what was done improperly. I am not responsible for poor quality workmanship. Please help me to get them to do the right thing. Dave Wimberly