Some years ago, I bought a very agressive flat tappet drag race cam from Comp. A lobe went bad after about 6 passes. I called them and explained the situation and, as per thier instructions, sent in the cam/lifters. In about a week, they called me and said there was a problem with the cam as there had been other failures and suggested that for my application a solid roller would be a better choice. I agreed and they gave me full credit on my bad cam and a special deal on the new parts. I considered their action more than fair considering the race application and have been a customer ever since.
The moral of the story is; call them and give them the truth and hope they will treat you with the same courtesy.