Gold-Cash.com Gold-Cash Website and packet say they accept silver & then, they kept my "non-gold" items without paying a cent. Internet

I decided on Gold-cash.com because they were one of the few that bought silver.  I am not really a gold person, but I have a ton of broken silver jewelry.  I sent in several stamped sterling silver items, including a thick sterling chain.  They state on their website, and on the papers in their gold packet, that they buy silver, platinum & gold.  They also state that there are no minimum weights. 

I received an e-mail saying they offered me $0 for my items.  Then, I clicked on my "detailed report" and it just stated "non-gold items".  It didn't even say how many items they received.  It said they will return my "non-gold items" COD.  I e-mailed them to have them clarify on my report.  I received no response.  I sent another and still no reply. 

I am sure that many people have had good experiences with them, they wouldn't still be in business if they didn't.  However, I feel ripped off when I can't even get a report of what they received or how many items.  I would never have sent my silver items if they didn't state clearly that they welcomed them.