Big bill

So after six months with Bulb I now get a bill for five times my calculated monthly DD… is this normal with Bulb?

So after six months with Bulb I now get a bill for five times my calculated monthly DD..... is this normal with Bulb?

No.

Would that be a Bill for 6 months or a Bill for one months usage that is 6 times your dd amount?

So after six months with Bulb I now get a bill for five times my calculated monthly DD..... is this normal with Bulb?

No - unless it is the first time in five/six months you have provided a meter reading. If that is the case, you should see a credit in your Bulb account at https://account.bulb.co.uk (and this will probably also show up on the new bill) for the previous five/six months of ‘estimated’ bills - and then the new ‘readings based’ bill will be shown as the new amount.