Cancellation

so, my contract came to an end on the 03/03/2015 (Open line) i followed the whole procedure, 30 days notice and i called in to find out whats going to happen to the benefits i will receive (even though the end of the 24mnths was on the 03/03/2015 Cellc still recharges you on the 1st) When i called, i was reassured by 2 to 3 consultants that there will be a \disconnection credit"due on my account. This morning i call and a customer services rep sends me my current statement which has NO credit on it"