****MERS!!!

These people are now harassing me for 2 years! They claimed to be Telkom, and that we can advertise online with them, 2 weeks later I got an invoice for R14 400.00 payable immediately. Watch out for them. I tried to report them to various institutions, I have now contacted Ombudsman as well. These people keep on calling, posing as the accounts department, then the sheriffs office now debt collectors. How can this be legal?? They are the ones in the wrong. How are they getting away with this??