Complaint Review: SHITOU (SZ) TECH CO

I ORDERED A DOG BALL LAUNCHER BUT GOT JUST THE TENNIS BALL AND NO LAUNCHER

When I complained they didn't even acknowledge that the Launcher had not been sent - this was their reply;

Dear Customer,

Thanks for your purchase on our store. We are so sorry for that the goods you received can not meet your expectation. Could you please give us more details about it? According to our policy, all items must be returned to us at the customer's expense for a full refund to our Logistics Center address,it will cost more than 20 USD. Or could I suggest that we issue a partial refund about 20% and you do not need to return item to us which could save your time and money? Is it acceptable for you?

PS: Please do not worry, we will provide the return address if you insist on returning item.But kindly note that we do not accept Unauthorized return.You may not be able to get the refund if you ship it to a wrong address. We are looking forward to your reply . Best regards!

So their scam is for me to accept this offer, I paid US$22.98 and will get back US$4.60
So they sold me a tennis ball for US$18.38
PayPal have been useless in this matter, they wanted me to return the ball to get the full refund offered, I know the ball will never reach the address in China, therefore I will never get my refund, this is The China address
Street address:505 Huada Science and Technology Building, 6 Keji Nan Avenue, 1 Gaoxin nan Road, Gaoxin Community, Yuehai Street, Nanshan District Zipcode: 518000 City: Shenzhen State: Guangdong Country: China.
The tennis ball was posted to me from Australia ( Where I Live)