Fraud Scammer asked for 35k

My father received a Fraud call today from a guy name Mr. Khan. He told him to send his money back which he accidentally sent him. He sent him a fake text message and a scanner on WhatsApp. which he deleted after he realised that we have identified him. My father varified and found there was nothing credited in his account. Apparently, a scammer call. Beware of such frauds. Just call the police or cyber crime team and share the information with bank if somebody try to scam you such way.