something like happened to me also . I designed 21 banner ads then the order was suddenly canceled 1 month later after i completed the project, saying buyer paid illegally but i was already withdraw the money . I sent all the screenshot and proof but still my money. and for the 2 month all my funds went to Fiverr saying ''Cancelled Payment Refund to Buyer''. So , all the hard work i did just went vain like that.