FNB lawyers won’t stop threatening me even after I paid off my loan.

I had two loans with FNB which were paid up in December 2024, I sent them the proofs of payment n my credit profile updated accordingly, I got a paid up letter for one n still waiting for the other one. My problem is I still get the messages from LWM threatening me with tracers coming to my work place. Can FNB sort out this with their lawyers please, I called the LWM n was told to ignore them but until when? Why is it so difficult to delete my profile from their system? This is so annoying.