Cancelled but not Cancelled

<p>I cancelled my contract on 17 Feb at the end of my contract giving a months notice. I was charged end of April. I phoned on 4 May to query this. I was told that it's now cancelled and someone would phone me to confirm. No one phoned me. I phoned again on 11 May and had to tell my whole story over again. A guy cam on the line telling me that he has put in a cancellation on my contract and also put in that I mustn't be charged again and that I be refunded. I was told to hold for a reference no. After holding for a reference no. for 7 minutes and a total amount of 25 minutes I had no option but to hang up.</p> <p>My question is: Is my contract cancelled or not, will I be refunded and will I be charged incorrectly again end May?</p>