sorry to hear that. The material we use (and have been using for decades now) for the clips is intentionally of the stiffer / harder kind, so it has a long-lasting safe & tight grip on the mics. Perhaps with the clip that came with your mic, the edges were not as rounded off as they should have been. I'll have a look at current production, and check if it was a one-time thing. Thanks for your comment!
Best regards, Martin Schneider / Neumann Mic. Development