MELBOURNE: Victoria's Gas and Fuel Corporation has been ordered to dump its advertising agency because it poked fun at the royal family in a newspaper advertisement for shop-soiled gas appliances. The state Premier, Mr Jeff Kennett, an avid royalist and former advertising man, has told the corporation it is not to renew the contract of Thomson/White/FCB when it expires at the end of the month and has ordered the advertisement's withdrawal. The cartoon-style advertisement featured Princess Diana saying: ''Slightly damaged goods but you'd hardly know'' and Fergie with a balloon reading, ''Just a tad shop soiled''. Prince Charles, pictured at the top of the advertisement with huge ears, was saying: ''When you're superseded you're worth less.'' The Gas and Fuel Corporation which chose the advertisement from a series submitted by the agency, has received about 15 complaints from the public and its chairman is writing to apologise. A spokesman for Mr Kennett said he was angry that the agency had misused the royal family's plight for financial gain. The agency has refused to comment.