Charged for two lines and incorrect line cancelled

I app**** for an ADSL package of R599 in July 2017. I called in to the Billing department on Saturday 26th August 2017 for my billing information (amount due etc) and was advised that I had been charged for two lines. I then explained that this is an error as I only have 1 line and 1 modem. I was then told that I need to call the Sales Department on Monday 28th August 2017. I then spoke to Nompumelelo and was advised that they will handle the matter within 48 hours. I then called in on 30th august 2017 and spoke to Zimasa who said that they will call me back at 11am the same day. I then received a call and called back. I then spoke to Nobi and she did the cancellation while I was on the phone. On 1st September 2017 my internet no longer worked. I called into the faults department on 2nd September 2017 and was advised that the the account was still open of the one account but the line was closed and the other account was open but the line was open. I then called into the billing department this morning 4th September 2017 and asked to speak to a Manager but was put on hold for 15 minutes. This was not the first time I asked to speak to a Team leader or Manager and I am always told that the managers are busy. I am furious as my wife is a student and needs the internet for her studies. It has been 9 days since the start of my request and this has still not been resolved. If I do not receive a response today, I will take this matter up with the OMBUDSMAN