TELKOM WRONGLY CHARGES FOR DATA ON ADSL LINE FOR 4 YEARS.

I have been overpaying Telkom for almost 4 years for an ADSL line without data in McGregor village in the Western Cape. An amount that had escalated to R818 by end November 2019. I had been in twice to query this, only to be told that was the amount. So I accepted it. However in Dec 2019 I decided to try again. This time I was told the amount billed all these years was for the ADSL line plus data, the latter being a service for which I never signed up. This has been happening since 2016. I signed up for an ADSL line only back in 2016 and have only ever used Afrihost for my data and have the correspondence from that company to prove when they activated the service. I have an email where the Telkom manager has admitted that an amount of approximately R12182.30 is owed to me. Today Telkom credited me (not a refund which is what I am after) with R2578.01. I'm flabbergasted. I'm going to persist though even though we all know how frustrating the process is bound to be.