Sultan wired the money for the 23 and Me Kits (?)

Bella informs me we received the wire for $6200 just yesterday for the 23 and Me kits from Sultan. He knew the kits were invalidated and could not be used...we received the credit from 23 and Me for the purchase already. Before we send the wire back to Sultan I want to make sure this is what we should do (not sure if for some reason he was to still proceed and send the funds?)

Please advise if Bella should wire him back the $6200. thanks