Yeah I get these quite frequently. I've had to drop an order or two at a courier service. I always get full payment before starting a job because its much easier to scam people across an ocean.
Be cautious of all the scams, which are always worded like this below:
Good morning, please i do need1000 pieces of t-shirt adult small size
and email me total amount and plus the shipping charges. and i will
give you my credit card for the payment
Size: Adult small size
Color:black
50/50% Cotton(50/50 cotton/Dry Blend poly)
Brand: Gildan
Quantity:1000Pcs.