Can you understand this gas/electricity bill?

Having reviewed your account, we've noticed that you've paid for
more than you've used with your monthly payments of £74.00.
We'll refund £116.35 to your account on or around 5 Nov 13.

Based on our projections of your future usage at the price on your
tariff, we've flattened your payments with a new Direct Debit
amount at £80.00, starting on 16 Dec 13.

Is it just me or do those contradict each other? Am I using more or less? Why am I now paying a bigger amount each month AND they're refunding me money? What the ****?

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For 93 million miles, there is nothing between the sun and my shadow except me. I'm always getting in the way of something...