Caller: Mandarin speaking male who claimed he’s calling from e.tel—an Optus subsidiary company according to him

He claimed I applied for an e.tel mobile number in October which wasn’t true and tried to suss out my personal information. He also said the transaction was illegal and incomplete. Told him to call police if he’s so concerned about it and hung up. According to real e.tel website there are Chinese scammers using their company name to gain financial and personal data.