Sizakele Mashinini is using my info to harass me

Sizakele is a guider at MMM who is also senior credit controller at cell c. i happened to share what she wrote on FB with the group that i was in and she was the admin for the whatsapp goup, she then called me on private and i was not taking the calls. she then called a friend of mine that uses a simcard that i had registered with rica whih is a cell c sim, she **** to my friend saying she is calling from cell c. I then picked up her calls and she was calling on a privte number, i then dropped my phone. she sent me an sms with my full names, where i work, my physical address, my date and year of birth. She threatened me by saying that i will spend my next birthday in a bad state. I then didnt know that she worked for cell c, i called cell c several times trying to report the matter. I was told to call the head office, I ten did my research, i found from LinkedIn that she is the senior credit controller at cell c. She has been sending me threatening messages. I will open a case against her and cell c for allowing their staff to use such personal info for their own benefits. She said she will see me soon, i guess she will be coming to my house anytime. I AM TERRIFIED!!!