Repair of outside GFI

In June 2018, my GFI blew on the inverter of my RV while staying at the Fireside RV park. I contacted Mobile RV who came out with a new GFI and proceeded to put it in but the electrical kept shorting out. I was told that the mother board for the inverter was bad and would need to get replaced when I got home to California. I was charged a large service call and labor coming to over $300 and the problem was not fixed. When I got to my new RV spot at the Virginian RV park, Wayne who does a lot of RV repair/electrical work evaluated my problem and found that the loads were incorrectly wired on the GFI. He fixed the problem. I not only had the cost from Mobile RV but also paid to have the problem corrected. I contacted Kody to address getting some of the monies returned and was blown off. Do not use this company. They have poor customer service and don't have qualified people working for them at these high cost service rates. Instead contact Wayne at the Virginian RV park.