Debited after contract has been cancelled

<p>My Contract was cancelled on the 25th of February. I was debited on the 1st of March 2017 for the month of March and I understood this would be my last debit order as my contract ended 25th March and my number moved to prepaid. Move forward to April the 1st and guess what I'm debited the full contract amount R399. For what, April? Please refund this R399 IMMEDIATELY! I will be going in to the bank tomorrow and have them put a stop order on this so that I am not suddenly debited in May again. I do not have a contract anymore and should NOT be debited. Sort this out asap</p>