JP Pools Jason Parsons Will not refund my deposit after not willing to do the work Gallatin TN

I put down a $700 deposit to JP Pools for service to my pool in 2018. It was moved up to Spring/19 due to weather conditions having to be right for the work being done. On 4/24/19, I had a appoinment with them. I waited all day for someone to show up and they did not. I contacted them and they said they did show up later in the day, after I had given up on them and then was not available.

They decided that they did not want to do the work then and said they would refund my deposit back. I have been going back and forth with them on this money for over a month and I finally got a portion of my money $325, stating they would be keeping $375 for fees.

I signed nothing and my work order says nothing about any fees. I should not be accountable for someone to show up un announced and expect me to be there. I want them to refund me back in full the $700 for zero services rendered.