MTN

I cancelled my contract on the 24th o June and my Contract was ending on the 12th July and I was told that they won't deduct any amount because the contract is ending... only to find that will deduct the amount of R387.00 which doesn't make sense to me.... they are telling me that I one suppose to end the contract on the 1st of July which doesn't make sense to me...I would like MTN to refund my money back besides the cellophone insurance amount,which i told them to cancel it.