not paid but open a return and we can't close it

[first_rate002]

return id:5188518380
buyer id :schnullerbacke9030
item id :294118652421

hi,the buyer open a return for the item but we have checked he not paid for it 

we try to close the return 

but we have failed 

would you mind to close the return for us and not count into defect 

thank you so much in advance 

[bootyooty]

pls contact the costumer service @first_rate002