Cross country home services Refusal to agree with contract terms and conditions Sunrise Florida

I started a warranty with cross country home services. A little over 30 days after having the company my tenant at my rental property said that there was an issue with the AC unit. I reported it to cross country home services. 1st they assigned me an AC company that didn't service my area, 2nd company showed up and said they would follow up to fix my issue they never came, 3rd they allowed me to pick a company they then denied to work with that company and fix the issue after the invoices was sent in and they stated I needed a new AC, then somehow they assigned me another company that is suppose to be their top company in my Area that company came out stated I needed a new AC unit then sent cross country the invoice. Cross country then denied my claim stating that it was a pre existing issue however there company they sent out stated to them that there is no way to determine when the leak started in my AC unit. Cross country then told me to send service records in for the unit and they might be able to assist me. That wss done they told me I would have a response I'm 3-5 business days. Once the 3-5 business days were up they stated they needed 3 weeks to respond to me. I've read several reviews of the dragging out process for months and refusing to fix issues I believe the whole company is a scam.