David Richmond owes the council more than £3,500 after being overpaid housing and council tax benefit - without knowing.
Nottingham City Council blame new procedures brought in by the government for the delay in updating people's records.
Nottingham City Council say they've not been able to process people's changes of circumstance quickly enough, after a new government system was bought in.
More top news
Marches to protest against extremism and terrorism were held in Birmingham city centre today.
After a cloudy and damp evening, the cloud should clear through the early hours of tomorrow.
It will be mainly cloudy with some outbreaks of mostly light rain and drizzle.