I've updated your site to use a responsive design. However you have a lot of pages you have created by hand that aren't responsive and since they are your own custom page designs they aren't easy for me to convert. You are using things like tables with a specified pixel width that don't lend themselves to responsive design.
Basically the page is responsive, but the contents in it that you have added aren't.. I think the best thing to do at this point would be to have a premier support ticket with you. We could spend an hour with you on the phone and I could show you the basics of responsive design and convert one of your custom pages to a responsive layout. Then you could take what you learn and apply it to the rest of your site so that it is fully responsive.
Since you are a long standing customer, we could do the support ticket for half off, so it would only be $50 for the hour of hands on assistance and training.