Wechat added a dog seller. I just wanted to buy a border collie recently, so I consulted her and thought what she said was quite reasonable, so I did as she said.

I feel like you've met a liar. Now there are two possibilities. One is that you gave her money, and then he didn't deliver it to you, because he was not selling dogs at all, but a liar. The other is that you gave her money and he delivered it to you, but you were obviously cheated and overcharged you a lot! Anyway, I think you should stop transferring money to her. Just send it as a lesson. Find a reliable platform to buy things, preferably face-to-face transactions.