Incorrect subscription processed

I have been a telkom client for the last 3 years. I had a product called Telkom Simple with a subscription of R399PM<br> The speed of the ADSL line was very slow and i requested a upgrade on my line. The consultant recommended a subscription of R499PM with 20 gb data per month and a upgrade with a higher speed line. I agreed to this option. When i got my account this month the subscription showed as R1 011. I enquired about this today. I spoke to a Nicole at the account department. She informed me that i was signed up for a uncapped option for R670PM. I Never agreed to this option. She put me through to the sales department witch said i must speak to the accounts department. I spoke to 3 people and they just keep putting me thought to another department, and nobody wants to take ownership to resolve this enquiry. I want them to recall my initial call to them when i arranged the new option, and correct my account.