Service added to account without authorization.

I noticed on my Telkom mobile bill for last month, that an extra R68 was added to it. I called Telkom who said that a service was added to my account, but they credited me and removed it. I asked the person to send me a reference number, since I've learned to not believe anything Telkom says, but he never did.

To confirm that it was actually resolved, I contacted them again, this time on their online chat system. The person (Mpho) said she can only assist me if I provide the password on my account. Apparently this was added more than 5 years ago, which I can't remember. I asked her how was a service then added to my account if the password is needed, but she didn't respond. She then called me , and I asked the same thing, and then the call was disconnected.

It would be interesting to know how many other people are also paying for extra services they didn't ask for.