Incorrect balance on my credit report and calls to billing section get terminated.

I was contacted by an agent to sell me an Explora model 3A decoder which would cost me R139 per month for 24 months. She told me that the present decoders that I had would soon not be able to continue working and that I would have to switch. I then told her that I had extra view and she said that was no problem because I would receive 2 decoders. I was told that it would cost R139 per month and led to believe that it included the second decoder. I have been paying R278 per month since August 2019 so I am paying for 2 decoders and regard it as false marketing. After I queried the account in 2019, I was told they would listen to the recording. Guess what? No feedback to date. I have been trying to phone their billing dept this morning and when I eventually got through and told the person I want find out my balance then the called gets terminated. This happened twice in a row. I was unable to leave a voice message. I receive a credit report monthly and the last time it shows payment was in May 2020 but the bank account is debited every month. The balance showing on my credit report is R5282 and should only be R1668. I want a full financial report of my payments to date.