Returning of Work Equipment

This is my last resort of trying to get assistance about the unfair treatment I am currently getting from Sanlam. I was employed as a Financial Advisor with Sanlam from the 01/10/2020 at Sanlam Umhlanga . I was given a laptop and printer of which I had said I have my own laptop but they insisted on giving it to me .On the 21st January 2021 I put through my resignation ,and I advised about returning the laptop and printer. On the 25 January 2021 they rep**** saying I cannot return the laptop and printer I need to sign an acknowledgement of debt for the sum of R19946.I advised them that I would not be able to sign this as the equipment that I was given is in perfect working order for me to return it. Chantel whom I have being corresponding with said to me If I do not sign this acknowledgement of debt for the laptop and the printer which they refuse for me to return to them I would be handed over to debt collectors by their lawyers as a bad payer. All I need is for Sanlam to let me return their laptop and printer as It is not fair to hold me liable for equipment which they refuse to take back .How unfair to have to pull this kind of stunt on me. Can someone please assist me with regards to this please as I am having sleepless nights over this.