Synchrony Financial Credit Card Complaint

Synchrony Financial Credit card department,

Customer service / Customer relations Ohio

On -/-/2016 I purchased a necklace from JC Penny 's, I also purchased the care plan with it and I was told by the sales coordinator that it would be insured if any thing happened to it. I wore it one day and the stone came off the chain, when I went back to the store with my receipt and the chain I was told that not only do they not replace lost pieces, but that it was a one of a kind stone and it could never be replaced. The store manager got involved and he told me he was sorry for the confusion and that I could purchase anything else I wanted and he would give me 50 % off. I told him I did not want any thing else, I wanted the same stone I had purchased and that I should not have to pay for it, since the insurance should replace it. I Value my credit and because of this incident, my credit score went from - to -. I pay my bills, I refuse to pay this one because I was so misled, I have been a very good customer of JC Penny 's I have totally lost my trust with them.