Recommended Coach Waxing Service in SE Michigan?

Does any one have direct experience with a competent waxing service in the SE Michigan area? I managed to get connected with a person who does specialty vehicles, coaches, and high end import exterior detailing, but he is only available to do coaches on the weekends. If it isn't raining we are traveling, so I am looking for a recommendation from forum members who may have experience with a good waxing service. I didn't anticipate finding such a service would be so challenging. The few places I have found from internet searches won't call you back or are broker type services; I am unsure who will actually show up and what the result may be. Thank you.