Electric 5,933 kWh
Gas 11548 kWh
What they estimate from lasy years usage , we have been cutting back some more to come
At average current price cap prices that's £2,797/annum. An 82% increase is expected from 1 October giving £5,090 p.a.
If you take account of the £400 from the government that's £4,690 p.a. or £391/month.
£239/month doesn't look like it's going to be anywhere near enough unless you have significant credit and/or make significant cutbacks.