In April 2013, Duncan Smith said he could live on £53 per week as Work and Pensions Secretary, after a benefits claimant told the BBC he had £53 per week after housing costs. Also in April, he called for wealthier people to voluntarily return universal winter fuel payments to help reduce the strain on public finances, prompting some wealthier pensioners to state they had already tried this but had their offers refused because there was no mechanism for returning payments. In September, the DWP cancelled a week of "celebrations" to mark the impact of enhanced benefit sanctions. In the same month, the DWP was subject to an "excoriating" National Audit Office report, accusing the DWP of having "weak management, ineffective control and poor governance" and of wasting £34 million on inadequate computer systems. Duncan Smith dismissed allegations in Matthew d'Ancona's 2013 book "In It Together" that the Chancellor George Osborne had referred to him as "not clever enough". The allegations were also denied by Osborne.