I paid my first bill on the 20th March and was told I would get my final bill from my old supplier by the 1st may. My bulb credit doesn’t seem to be going down at all though and I’m just wondering who’s supplying my gas and electricity

I would think it is Bulb, your switch will be most likely be going through the 3rd party verification process which can take up to 6 weeks. I wouldn’t be concerned just sit tight and it will sort itself out.

@Allyboom_32 @scudo is correct, readings are going through 3rd party validation and may take a few weeks. Let us know if you haven’t received anything by 6 weeks from the transfer date.