Telkom’s admin plus incompetence

I recently bought a phone and took out my contract with Telkom. I then received a call from a person by the name of Letticia from the sales team who was selling me insurance and we had an agreement that I would be paying R152 for a cover of R16000, but for some reason on the 18th of July I received an invoice stating something else even with my name spelt incorrectly, I then sent them an email on the 24th of July to which they have not responded to till today. I keep calling and I am being given a number to call and I am being told to send an email but no one seems to care to attend to my matter. I have been highly disappointed with Telkom and it’s underwriting team because now I’m due to pay R385 for insurance and I don’t want that.

Please do help me because I am really frustrated with the whole thing, I just want to cancel and get my own insurance.