Harassing me over an account that is not in my name

Around the middle of 2015 I moved out of the house I was living in. I lived with my dad and step-mom. Since I wasn't going to be living there, I had the account transferred from my name to my dad's (just as a note, the Telkom staff were so useless at this, it took 4 MONTHS to transfer ownership).

My dad has since passed away (April 2018) and since then I have been getting harassing calls and SMSs that my Telkom account is in arrears. I asked one of the consultants who called me why I am being contacted since the account ceased to be in my name years ago. The said my father is not responding to messages. I said it is because he is deceased. She asked for evidence of this and I gave her my step-mom's name and cell number and suggested she call er and request the death certificate. Above and beyond that I cannot help her. I live 1000kms away and the account is not in my name and when it was, I never missed a payment.

The calls and SMSs have not stopped. Every time I get a call I explain AGAIN that my father is dead and that I gave the previous consultant the contact details of the person who can verify this, and I give them my step-mom's details AGAIN. And it still doesn't stop.

In this time I have spoken to my step-mom numerous times and asked her if anyone representing Telkom has contacted her for my father's death certificate, and she says they have not.

So I have done all I can to assist you, yet you continue to badger and pester me. I have confirmation that you have not contacted the one person who can assist you.

I have now just received an SMS that I have been handed over to P&P Attorneys. Seriously. You will not get a single cent from me. That account is not my responsibility. The person whose responsibility is in a box 6 feet under. And all you need to do to confirm this is contact one person whose number I have given you, yet you prefer to continue harassing me. Send your lawyers. Please. Retards.