One off payment

How do I make a one off payment? I have added funds via my on line account, but was not asked for a debit card! My Bulb energy ac has shown the credit but no funds have actualy gone in, do I asume that my Direct Debit detsils will be used to debit the amount I sdded, its been 24 hours and I have not had an extra Direct Debit
I want to be in credit for the winter
and add my ex supplier refund

Hi @john5912 we can see that two payments were made yesterday. We’ll use your Direct Debit details to take the payment. These payments will be credited into your Bulb account by 12 October.

Fantastic thank you