Cell c 60 day data scheme

On the 20th October I purchased a 1tb data bundle for 899 for 60 days. 30 days later cell c decides to void my bundle because they implemented a rule that the user needs to request for a roll over for another 30 days. I called cell c and explained that when I purchased the data it said on the package for 60 days and I was not informed of the change made by cell c. Cell c then advised that all customers were smsed to which I did not receive an sms as the sim card is in a router. They told me the case will be investigated and that I will receive feedback in 48 hours....its now 48 hours and I'm told that it's according to working hours which means over the last 3 days I am only 16 hours on waiting and that I should be patient. I cannot work or do anything as I do not have data and it's now costing me more money to purchase data through other service providers. Cell c can you please stop inconveniencing me financially because you made changes. This is just a **** once the 60 day data is purchased from you..you cannot just change to rule to 30 days and expect clients to be ok with it for not knowing that you changed it!!!!!