Griffintechnology.com Customer Service Issues

I had a Survivor Modular case that broke, causing the protection to fail. Initially, I carried it on my belt, but the clasp broke. Then I started keeping it in my pocket, and during this transition, the clip to close the case and make it waterproof also broke. I continued using the case until recently when I got caught in a downpour. Surprisingly, it managed to protect the phone with only a small amount of water getting in. I am impressed by its durability. I am looking to get a replacement case as I really like this one for its value. I purchased it from Best Buy in March, but unfortunately, I don't have the receipt. Any help with this would be appreciated.