Complain!!

Multi choice upgraded my account from dstv access which I'm paying R105 to dstv compact plus which cost R519 without my knowledge or consent. A debit order went through on the 31st of April for may month and then I contacted them ,and they adviced me to reverse and pay cash the amount of R105 ,of which I did at pep stores. Today my account is blocked and I called the call center, it is said that I should pay an amount of R150 reconnection fee as there is a reversal of R600 that went through yesterday that I'm not aware off... I asked the lady from the call center why, and she could not answer as she saw that I already payed an amount of R105 this month but still does not understand why it's blocked because on the system it's reflecting that a payment was received. She tried to unblock my suspended account but was unable to . So my question is how am I supposed to know why and where do they even get the permission to upgrade and deduct money from my account without my consent, I payed for this month already but my channels are still not showing. I don't know when it's going to be reconnected because I'm not going to pay another amount requested this is just a ****. Please intervene I'm so angry right now what they did is not acceptable!!!!!!!!!!!!!