Debit order issues and bad service

I am really very, very frustrated with Cell C at the moment.

I get paid on around the 4th or 5th of the month, and when I opened my contract, I was told that debit orders can only be done between the 1st and the 15th of the month.

This means that every single month, I have no choice but for my debit order to bounce and to pay it as soon as I am paid every month. This is a frustration I have expressed to many call centre agents, only to be told last month that my debit order can be taken off on the 6th of the month to match my salary date. I was very happy and asked the agent to move my debit order to the 6th of the month (This was in May). She told me that my first debit order for the 6th of the month would come off on the 6th July. On the 30th May, my debit order bounced as usual. I waited for payday and on payday, I see that my account was DOUBLE DEBITED on the 6th of June.

When I asked the call centre what was happening, I was first told that I did not pay my April amount, which I certainly did. when she acknowledged that it was paid, I was put through to a new department. When I got through to that department, I was told AGAIN that I was through to the wrong department and was eventually put through to collections where I was told that there is no way they can set up a debit order for 2 months in advance, even though I maintain that this is what the call centre agent told me. This lady was quite rude, to be honest, and I know it was not her fault but she eventually told me that my issue was the call centres problem to fix. Being at work, and after being on the phone for 30 minutes, my issue has still not been resolved. I told the lady that I am 100% willing to pay the amount I agreed to that was supposed to come off on my initial debit order but she told me that if I did this, my account would be blocked anyway.

SURELY if I had paid my debit order, and the amount came off on the 30th June like it was supposed to, my account should not be blocked???

I am really frustrated that first of all, 3 people that I spoke to did not even know what was going on in my account, I was accused of not honouring my agreements AND my issue has not been resolved and I have been threatened that my line will be blocked.

This is just shocking service, and I am really concerned about Cell C taking money out of my account, on their own terms when I have not agreed to it. If someone could assist me, It would be highly appreciated.