Accused of theft!

After being accused of being a (1)theft and that (2)******** charges will be laid against me. I contacted Teljoy to find out whats happening. They first said I owed an amount on my account, which I disputed. I asked for a statement of my account and someone else's account was sent to me. They admitted error and we moved on.

Finally, they figured out that my account was paid up in full and I've taken ownership 3 months ago. They then apologized again and said the "threat" was an automated email.

Friday (20th of July) I was told they would update my account and send a letter to ITC saying my account has been closed and paid in full. Its Thursday (26th of July) and NOTHING has been done. I've just called again and they said they working on the letter but don't have my ID number for the letter. What?!? Seriously!?!

This is a copy of the letter below:

"Good day Mr C. Roberts, Please note that your account with Teljoy is now severely overdue and we have not been able to get in touch with you. As a result, we have no choice but to blacklist you with the South African ***** Services. In addition, our attorneys will also be in contact with you to start the recovery process and open a ******** case of theft against you. Please see attached mandate so that we can debit the full amount and to stop the above. Kind Regards, Portia Ntshotsho Collections Agent"