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.
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She was last seen in the city centre on the morning of Friday (August 18).
Victims of crime in Nottinghamshire can now go online to report a crime or incident and track their investigation through to its conclusion
Monday will stay mostly cloudy with patchy rain at times.