Wrongful deductions from Full and Final Settlement

I left my previous company within 1.5 months of joining. Once I resigned, my HR told me over a call that any onboarding charges like 2 weeks hotel accomodation will be deducted from my FFS. I asked the HR immediately to give me a breakup of those deductions. After few days, the HR told me that the Exit team will provide those details. I raised a request from the Exit team asking for the deduction details and they responded that there will be no deductions. After a month from my last working day, I followed up with the Exit team to check when will I receive the FFS. They responded with the timeline for the payment to be made along with the payslip which has a deduction. I followed up to check the reason for deduction and the HR replies that she mentioned that deduction to me many times where as we had only one discussion over call but I still asked for the detailed breakup in which they mentioned they mentioned that there won't be any deduction. Now they say that there won't be any changes to the deduction. Please help me if I can do something legally to get the money I worked for.