Telkom system upgrade flagging customers as defaulters

About 3 weeks ago my LTE internet connection service was suddenly disconnected even though my account is up to date. I proceeded to go to the Telkom store and was advised that they are offline and unable to view anything on the system because there is an upgrade taking place.

The following week I received an sms telling me that my account is overdue and I need to pay in an amount in order for my service to not be disconnected (I was already disconnected). 3 days after that my wife receives an sms stating that I've been handed over to Nudebt, mind you her contact information is nowhere on my contract information with Telkom, she has her own separate cellphone contract with them so why is she receiving my information? POPIA not in play?

I then proceeded to go to the store again on the 19th of April to query why this is happening and was informed a lot of customers are being affected by this issue that happened in back office indicating that we owe Telkom even though on the billing side our accounts indicate we are up to date and not in arrears.

How does this happen???