The creative brains trust behind 'Barbara from Bankworld', M&C Saatchi Melbourne, has been ditched by ANZ after more than a decade of partnership. ANZ confirmed yesterday that it would not be renewing the advertising agency's contract, which expires in late March. A spokesperson for the ANZ said the decision was part of an "ongoing global benchmarking process which... [involves] reviewing our marketing relationships." He would not disclose when the process would conclude, other than to say details would be revealed in due course. Speculation is rife that Whybin TBWA or DDB has secured the regional brief, but ANZ refused to comment.Last month, the bank put all its creative agencies on notice, flagging the review of its $55 million worth of creative accounts.The accounts included M&C Saatchi Melbourne for retail and DDB Melbourne for the credit card business. The review announcement came less than a week after the sudden departure of the ANZ Bank's group manager for marketing, Mark Lollback. It is understood that all regional decisions on marketing are now being made by head office, with the review aiming to consolidate and centralise the bank's messaging across all its Asia-Pacific units.    The "Barbara" campaign, which parodied the worst aspects of in-branch bank service, is unlikely to be revived despite spawning a slew of Facebook and MySpace fan pages and even mobile phone ring tones.  Around 20 M&C Saatchi staff will be affected by the decision, with half expected to lose their jobs.In January, ANZ rolled out a new ad campaign under the tagline "One Day" that was created by DDB Melbourne.