Sdp

They can use the money they owe you to pay back the money you owe them. You can contact the debt management team to ask them if you can pay it back in installments instead, whether they will agree to that, is another thing. https://www.gov.uk/government/publications/dwp-debt-management-performance-data/dwp-debt-management-customer-service-standards#contacting-debt-management

Debt Management team

Telephone: 0800 916 0647
Textphone: 0800 916 0651
Relay UK (if you cannot hear or speak on the phone): 18001 then 0800 916 0647
Monday to Friday, 8am to 7.30pm