Is Brooks and Luyt even legit?? What do they do?

I got a message to call back Nontokozo from Brooks and Luyt attorneys.. my first suprise, they called me on my office landline and not my cellphone. When I did call back the lady who picked up wanted me to give her my ID Number so she can assist me. I refused. I told her I won't because I don't even know why they are calling. I even told her that I don't know why I am receiving their calls. She rudely told that maybe I should wait for the call again... I said no problem.

Why is Brooks and Luyt calling me? And on my office landline? The entire thing is embarrassing to say the least... as far as I know I don't owe anyone anything... Brooks and Luyt please sort your consultants out. They are rude and also please explain to me why iam receiving calls from you and on my office landline...