Comp Cams not responding

I've had terrible service asking for cam recommendations. Most just don't answer, others want to give you something close to what your're currently running. I even had one company provide specs that even they said there were no cores that could support the specs. It's crazy!! I've gone to companies that many recommended but poor results. I'm one of those people who like things in writing so I don't like spending money just on phone calls. It really surprises me that so many companies continue to exist with such absolutely pitiful customer service!!