Beware of those scammers who claim to be in "Africa"!!! They have scammed so many people! You are smart to pick up on the fact that it was a scam
First of all, be very aware of breeders who advertise their puppies as "teacup." Technically there is no such thing as a "teacup" yorkie. Breeder who advertise their pups as such are pricing their pups WAY high simply bc they advertise as "teacup."
I would recommend looking in newspaper classifieds in newspapers from cities around you. Go visit several breeders and only get a puppy from a breeder you feel comfortable with. You need to look at the conditions in which the puppy was raised and look at BOTH parents. Looking at the parents will give you a good indication of what the puppy will look like full grown.
There are also several breeders here on YT. Do a search for breeders in TX. I know for sure there are a lot of good ones in TX.
GOOD LUCK getting a puppy! Yorkies are the best.