Casss

I recently made a withdrawal of £1000 on bet 10. I received £200 almost immediately,the remainder was sent to another card tht had been cancelled There was no option to remove it on site. I closed tht account , Contacted bank with ArN numbers casino gave me but my money can't be found. Noone is helping the casino said they have processed it Bank says they don't have it and the casino can recall payment and reissue on a different card. Any advise?