Bad experience

My parents bought a DSTV long time ago when i was a teenager, when the installer came to our home my parents where not at home and the only person with an ID at a time was myself. the installer then used my ID number to register their connection. In 2017 my parents went to Multichoice to pay for the connection for April/ May month, the customer service at the store influence them to switch to Explora which they did and cancelled the account under my name. after 12 month or so of experiencing the Explora, without any sort of communication from Multichoice (i.e. calls or sms), i received a call from a company called Blake and Associates saying they are represanting Multichoice , I need to pay a certain amount. me and the caller agreed on her to take the matter to Multichoice but it seems the matter was not taken back to the owner as I again after +/- 6 month received the call from same company representing same matter but with different caller, i asked the caller (Mr. Owen Naidoo) to refer to the last call, which he said he can't as he don't have such access or cant see it. we then went through the same process from the first call. after the call i asked Mr. Naidoo for call refence number he refused to give me saying there is no such.

My issue is that Multichoice is targeting our parents as they don't understand a lot of specifics, the Multichoice personnel made my parents buy explora knowing for sure they came to pay for the other service. how is it that the same person did not cancel the other service as he told them he cancelled it.