Comp Cams not responding

I filled out the comp cams online camshaft recommendation form a week ago.
I followed up on Thursday with an email. Today I waited on the phone for 20 minutes.
No response at all. What does it take to get a camshaft recommendation? Any other manufacturers with better customer service? This is for a 512 stroker in a 73 scamp. We will have a super sniper efi and will prepare for a 150 hp nitrous shot. I want to use solid lifters as well. Stealth 440source heads and we want to be able to use pump gas and will be used for street and strip. I am not attached to Comp Cams at all. Any cam company who provides good service is what I want. Any advice appreciated. Thanks