You get laid off and you cont to get cks for 4wks what actions could company take if you don't give them back?

Laid off through the human resource office and it isn't sent to corporate payroll office until the monthly payroll reports and comp policy was to mail paychecks and the former employee refused to give the extra 4 paychecks back. WHAT ACTIONS SHOULD THE COMPANY, ( I )SHOULD I TAKE? ............This is a Payroll Procedures cl and this is one of my case problems