They have solid gold as well...I actually own a dy ring made of 18k gold. They may have bonded gold but they have solid gold, and silver as well. I always encounter unknowledgeable Sa's. One even told me treated means fake. Just ask for the product and look at what is engraved inside the jewelry.
I thought that I was the only one that encounters a unknowledgeable SA's. I was showed some solid gold today and I was told today that bonded gold is about how the silver and gold links were put together. When I showed her the item online she said that the gold parts are solid gold and not gold plated.