Alison Williams says she still has not received her money as Capita misses a government deadline.
Pension payments have been delayed after Capita took over administration of the civil servants' scheme.
Alison Williams, from Jarrow, says she is out of pocket as Capita grapple with a backlog of cases.
Civil servants from Charlwood and Fetcham say they have been hit by delays in pension payments.
Dame Antonia will be the first woman to hold the post and replaces Sir Chris Wormald as the UK's top civil servant.
Claims emerge after the Cabinet Office said there was only one complaint about Antonia Romeo's conduct which was dismissed after an inquiry.
Dame Antonia Romeo was found to have no case to answer over one complaint nine years ago.
Is transplanting staff at the heart of government part of a bigger strategy - or a sticking plaster?
The Cabinet Office says the move is "by mutual agreement" but it follows months of negative media reports about his performance.
