Usher diamond tweeter

I'm looking for diamond dmd tweeter .
Do you have any idea where to get it from.My orginal one broke.
Useher usa did not returns my calls and emails same thing usher taiwan.
They do't really care after you buy their gear.
Katli Audio is the new US distributor for Usher.

Contact them:
I have a pair call me 646 239 7724