Terrible after care service at RainSa.

I have a Rain Sim card on the 26 March 2020, I rica'd the Sim on the 27 March 2020 the Rica was successful but when I inserted the Sim in my phone it said register failed. On the 29 March I canceled my subscription on the Sim as it was still not working. On the 1st May 2020 I was debited R250 for a service I did not use and a service that I had canceled. I tried to query this to no assistance I even went to my bank to try get this mone back but my bank adviced it would be a lengthy process with them so I should rather try sort it out with rain. On the second of 2nd of June I received an email that I am using my Sim in arrears because they did not find money in my account (because I moved my money in the fear of being debited two months in a row for a service I am not using). I sent an email to rain again on the 3rd June to ask what arrears they were referring to because not only did I cancel this service but that Sim has never worked from the onset. Now I have repeatedly asked the agent I am dealing with in my email query to cancel this service but instead I am being told about speed test things that are have nothing to do with my query. I just need them to cancel this service and pay back the money they debited in May as I did not use this Sim card for the whole of April. I even asked the agent to check on his side if this Sim card has ever been used but again none of this took place.