Same thing happened paid for item before pickup and then the item has been deleted and no further contact

This number is being used by an online scammer (varioysly using names Alison Johnson, Leslie D Elizabeth etc) who alleges the number belongs to her boyfrind Adam Arafeh with a Westpac bank account being provided requesting deposits to hold items being offered for sale. Once deposits are made they block or delete their posts on Facebook marketplace and no further contact can be made.