Rain its unfair (no month to month contract)

The company is failing its customers, they paint a good picture about a month to month contract, in reality, it's not month to month it's a contract the difference is that you don't know you think you are safe because you are on prepaid/ postpaid service. I just found out that rain bill its customers for the service they did not provide, I was billed for 3 months while I last use my service in October (suspended in November) but I was billed for November and December. The full amount was expected from me while I thought I was taking a break due to financial difficulty since November, my service was suspended and now I wanted to pay the amount is now tripled . I feel that this is a **************** for South Africans, who have been ****** since the beginning of the cell phone industry , I thought the rain was different but its the same as everyone else, other companies I prefer them because they tell you straight and when making a decision you make an informed one, I just want people to know if you are with rain it means you have a contract with them it is not month to month like they want you to believe. I call it an open contract with no end.