Poor Service

On 19 March 2016 i went away for the long weekend. When i arrived at my destination i contacted DSTV so that they can enable my secondary decoder because the destination doesnt have a dual feed for my Explora decoder. I asked the lasy to help me and she did. She also said to me that must se leave the other decoder on so i said yes but didnt know it would be charged because she didnt inform met that there will be an extra charge on my account. So came the monday 22 March 2016 i arrived back at my house and immediatly phoned DSTV to change my deciders back to normal. On the 1St April 2016 DSTV deducted an amount of R1910.40 and my normal subscription is R908.00. I immediatly phone multichoice and spoke to Mpo. She advised me that they must go and retreive the original call and that that would take a few days. That was friday and by the tuesday she phoned me back and said that they have reviewed the call and that indeed the consultant didnt advise me that eztra charges will be added on my account and that she should have done so. She asvise me that if i can not wait 12 days for DSTV to return my money i should go and reverse it at my bank. I did that and on the 11th of April 2016 my money was back into my account. I immediatly then paid DSTV R910 which is my monthly subscription which Mpo advised my to. After that during the month of April DSTV suspended my services several time. Everytime i phoned them and they reinstate my services which cost me a phoen call of 20min everytime. On the 4th of May 2016 i got a message from my bank saying a debit order did not go through. It was DSTV for the amount of R1722.33. Again i could not understand why because the issue was resolved and my monthly access fee is R908.00. So i phoned DSTV again. A Sibeko lady helped me. I again explained the whole story to her where she said everytime they have disconected my services they charged me a connection fee. I told her that they can not charge me for something that is not my fault. She said she will go and listen to the call again. Later she phoned me back and said she listened to the call of the 19th of March 2016 and that i am liable for that money. I asked her how can one person (Mpo) and she tell me 2 different things. She just kept on saying that i was happy after the call and that i am liable. I said yes i was happy because nobody told me they are going to charge me R1000 for a long weekend to watch tv. I said to her that then she sould cancel my subscription and she sarcatically agreed and then hung the phone up. So my question is according to the National Credit Act must DSTV not inform me if any extra charges is going to be added on my account and must i not agree on that? And how is that one consultant said they are in agreement that i am not liable and after a month another consultant says that i am liable. As i know all calls is being recorded and the one that Mpo said to me that the lady was supposed to advise me about the extra charges and that they will credit my account for that money. And is that the way the Sibeko lady is keeping DSTV clients and business? I am very unhappy in the service i received.