Classic Chevrolet Grapevine

I called to schedule a appointment with Brad and he called the service department and they were supposed to call me back. They never did. This was a Thursday, so I had family business in east Texas on Friday. So when I got back, I came over to get my stuff fixed. It was around 4:45 and they were more interested in getting out of there, than trying to solve the problem. No cold ac and zero cruise control. This is the second time for the cruise control. On the first visit, they said they flashed it and it solved the problem. One of the second visit I told them what was told to me on the first trip and they told me that they had never heard of that. So they clear the codes and zero, nada , cruise control.?