Telkom don't bill accurately

Every year around Easter , Telkom fail to debit me.

Their records always appear wrong and then they double debit incorrect amounts. This is known as a Bill failure in the industry but no one at Telkom has been upskilled to understand this.

I have no one who can understand this or help me and I would like to go to the Ombudsman. Can someone please give me advise as to how I can take them up?

They also falsely send me upgrade messages which I find very suspicious