Emmanuel Bisong Maria Luare Yorkie Puppy Scam New Castle, Delaware

Found Classifieds posting of two teacup Yorkie puppies. Contacted the seller (Maria) and was told she was a 45 year old woman dying of cancer who could not take care of the puppies any longer. She told me she would register it with a shipping agency at the local airport the next morning and we would pay 350 for them to be sent.
We sent 350 to Emmanuel through Western Union. A few hours later, it said we needed to purchase travel insurance and a temperature controlled carrier for 720. I told them absolutely not and the seller offered to pay 200 towards it. After debating and calling and emailing, I decided to go ahead and send the 500.
I received an e-mail saying that they had other puppies that needed to be shipped today and they would respond with flight information when the next one was available. Angry, I emailed back and said I want them sent today.
I sent multiple emails to both accounts and have not received a word. I am devastated. Do not buy puppies through anything but a certified website.