Broken A/C

In Texas, there are only a few things that are required for the summer months (which by the way start in May and last until October): water, sunscreen, Shiner Bock beer, and a working air conditioner. We have the first 3 things covered; it's the last one that we are having problems with. For about 2 weeks now, it has been freezing up off and on, and generally not working right. So we decided it was time to call a service guy because there is nothing worse than it being 103 degrees outside and close to that inside as well.