Whats your thoughts on this?

I have a direct debit account for my gas bill bla bla bla.
Now I had a conversation with them on 5th Feb and was informed of the
rates ie first lot of gas charged at x amount and thereafter at y amount.
I now get my bill for this quarter and the x and y amounts are higher
than what was stated in my conversation of the 5th Feb. So from the 6th
Feb they have applied a higher charge.

This is just one of many inconsistences I have disputed with them.
They also have informed me my direct debit will be increased....like
hell it will, I will decide what I pay not them!