Telkom lies to its customers

I got uncapped WIFI from Telkom 2 months ago, my 1st shock @ the end of last month was when I didn't get a bill, I called them and they told me that my 1st payment will be going off the next month only, I accepted it and then I got my bill where my wifi is usually R899 I now had to pay R1800. I accepted it and was prepared to pay it until i woke up with my WIFI suspended and when i called they told me that my credit limit was reached. Now I'm lost because no1 told me about credit limits and if they took their money the 1st month I wouldnt have had a limit. Telkom you lie to customers in order to get business then you inconvenience us by shutting off our WIFI, I ask that you please send someone to pick up your router and suspend my account, so I can go with someone else