He Ordered wrong item，he wants exchange，we ask him to provide the Specifications of his old one，so we can help him find one he can use，but he said he don't know anything.
So we ask him to return item for refund,he said he only want replacement,not accept refund.

How can we send him a correct replacemnet if he don't know anything about his old one？
We told him we can not send replacement unless he has information of his old one. Then he replied a message full with dirty words to insult us,and open a case on us by choose a incorrect reason and full with lies

This buyer is Dishonest and disgusting