So we used them to service our system. They charge...

So we used them to service our system. They charged us for leak sealer but we found later the evaporator coil had been blown and they didn't notify us for warranty service. Cost us thousands of dollars and after our service ended, they called for a service that we supposedly paid for. So I am supposed to request the manager contact me per the owner of my property. Because the service we received warrants a refund.