I invested in a Tech 21 case at the end of January...

I invested in a Tech 21 case at the end of January, recommended from local EE shop.
Excellent, very pleased with it, holds credit cards securely.
I registered online at the time for the tech 21 warranty.
The little plastic clip broke yesterday, I am a plastics engineer by trade and the design of the clip fixation using two hot stakes is not conducive to frequent clipping action, hence it broke, IMHO..
i cannot find the receipt, "my fault", but even though i registered online at the time, Tech 21 need to see it..

lesson learned, keep your receipts safe ...