Start acting right
Let me start off by saying - Do not  threaten me with an sms by indicating that non-payment will result in Adverse Bureau listing, when the issue for non-payment is a reflection of your incompetence. After phoning and inquiring myself as to why I do not have access to the data services on the 20th of March 2020, I was informed of the non-payment, 4 MONTHS AFTER THE FACT OF BEING PHONED AND OFFERED A PRODUCT BY ONE OF YOUR SERVICE PROVIDERS!!! I requested that the payments be done via debit order, and all the necessary information was given to the sales consultant during November 2019. I remember it explicitly, so please feel free to review the recording (which I presume will be missing for one or other reason). Not once was I contacted to be requested to pay the amount which is in arrears. Just by the way, the account was settled and paid up on the 20th as well. Now, today, on the 23rd, you threaten me with a sms - thus giving me the indication that the reliability of your financial system is also something to be concerned about. 

Sort yourself out Telkom, and rather phone your customers before threatening them with an sms - and while you're at it, sort out my connectivity issues. Wouldn't want to threaten you with an e-mail.