You are being scammed. See HERE. This is a common scam where the seller keeps asking for more and more money.
There are no puppies. There is no sale or give away. This was a hoax to get as much money from you as possible. They will keep coming up with reasons for delay and more money, possibly even pretending to be government agencies to call and "confirm" that a payment is needed. The scam can be pretty convincing. But it is in the end, a scam.
You need to file a complaint with the IC3 center HERE. This is a website that will pass on the complaint to the relevant authorities such as the FBI, etc, and possibly - hopefully - may even get you some of your money back.
Please note: If I tell you simply what you wish to hear, this would be unfair to you. I need to be honest with you and sometimes this means providing information that is not optimal. Negative ratings are reserved for experts who are rude or for erroneous information. Please rate me on the quality of my information; do not punish me for my honesty.
I hope this helps and clarifies. Please use the SEND or REPLY button to keep chatting, or please RATE when finished. You may always ask follow ups at no charge after rating. Kindly rate my answer as one of TOP THREE FACES/STARS and then SUBMIT, as this is how experts get credit for our time. Rating my answer the bottom two faces/stars (or failing to submit the rating) does not give me credit and reflects poorly on me, even if my answer is correct. I work very hard to formulate an informative and honest answer for you; please reciprocate my good faith with a positive rating.