Frustrated with DSTV to understand a simple query!!!

I am extremely frustrated with the lack of service I've received from DSTV as this issue has been ongoing for 1 MONTH. I have 2 simple issues which they cannot seem to resolve or even understand at all. Each time I speak to a new agent and I then have to explain myself again - each agent tells me they will make a note of everything but clearly they do not. My first issue is that I upgraded my subscription on 2 April 2022 from Compact Plus to Premium of which I made 2 payments R590 + R430.35 = R1020.35 to cover this upgrade as per the system. My account balance was then R0.00 - ever since my upgrade to premium I've been unable to watch DSTV on my secondary decoder (connected via Xtraview, connection coming from an LNB from the dish straight to my secondary decoder and another LNB going to my primary). Decoders have both been tested and are fine, the issue only started after I upgraded to premium. The error code displayed is E143. No agent is able get it reconnected. Out of frustration I canceled my subscription. On 2 May 2022 I decided to try again and have my subscription reconnected but on Conpact Plus. I was told I owe R140.93, this is incorrect as my balance should be R0.00 - Simple request just to have my DSTV reconnected on Conpact Plus, primary and secondary decoder to work via Xtraview and R140.93 to be removed from my account as I do not owe anything on the account. Once settled I can then make payment for the month pf May subscription. I expect a manager who understands this simple query to call me ASAP!!