Cell Shocked

I recently took out a contract for a router and data package with Cell C, to my shock today I found out after contacting the customer care line regarding an issue that the contract is not what I was led to believe by the initial agent who contacted me for the contract. Or this valuable information was omitted. I was sold on the fact that the contract was 20gb per month, neglected to be told that this is in fact split into half, 10gb anytime and 10 gb midnight. Had I know this it might have made the difference between signing up or not. So disappointed.