What can I do to get my fault sorted?

I have a problem with my Telkom Mobile cell phone and once again I have not been able to resolve it.

Whenever my cell phone is off or out of range, my clients get the following message “the number that you have dialled has changed or is not in use. Please consult your local telephone directory or just dial 1023”

I tried to have this sorted out by using Telkom’s “Chat to an Agent” twice. The last time on the 26th of February 2019. I have attached the screen dump of my chat with Zanele (my second attempt) who clearly had no clue.

Next, I went to Telkom’s facebook page and sent a message via messenger. It took [ZM] 8 days to respond to my original message and the suggestions that were offered did not solve the problem. Frustrating because it took 6 days for me to get a response each time.

So, after 4 weeks I am no closer to having my problem sorted.