They're not going to admit they're at fault in any way, it opens them up for a lawsuit. I had some big problems with bismuth shells years ago, major case failures and shells that were obvious overloads all in a couple cases I'd bought.
I called the company, they asked me to send them the remaining ammo which I did. I never heard anything, finally called again, they acted like they had no idea what I was talking about and said they never got a package from me.
In reflection I'm sure they did this on purpose to cut out any liability.
Destry