Financial and personal details hacked

Over the past year I have had endless issues with un-authorised changes being made to my contact details on my DSTV profile. These changes included changes to my email address and contact numbers. At the end of February I was debited with an amount of over R3000 for my monthly subscription, which should have been only R1069.00. I went into the Multichoice Customer Centre to inquire as to why I had been charged this amount. I was told that some of my old decoders, which are in my cupboard at home, had been activated. I asked to see proof of me requesting these decoders to be activated. They could not provide any proof. The contact centre agent agreed with me that there seemed to be a problem on my account and that the extra R2000 that i had been debited would be reversed. I then visited the contact centre a second time and was told that the charges had been reversed. 3 weeks later I have still not received this credit. Today, I received an SMS from Multichoice saying that I now owed them an additional R8011 for this month. The 'supposed' active decoders are on my desk next to me and have not been activated for at least 6 years. There is obviously some ***** or lack of security taking place within the Multichoice systems as there are people within the organisation having access to customer accounts and authority to update these accounts, both the customer details as well as the financial details. Apart from this ***** the other issue is that un-authorised people have access to customer details which is in violation of the POPI Act. If this issue is not resolved soon I will take legal action to sue Multichoice for allowing ********** access to my personal details.