Rare Collectables TV review: I've sent back coins for a refund, 20 total.

I did not like the coins because there were to many of one date. I returned the coins thinking I had sent all 20, but they called and stated that there was 1 short.
I asked which one since I have so many, and was told that it was a Bicentennial
Coin [protected], so I looked though the coins I had, and sent them the one that fit the description. They stated that they received the item, but as of yet, no refund. They owe me over $900.00 to my credit card.