Final exit bill

How do you upload your final bill showing your exit fee, in order for Bulb to refund it

How do you upload your final bill showing your exit fee, in order for Bulb to refund it

Does this link answer your query: https://help.bulb.co.uk/hc/en-us/articles/115001227591-How-to-claim-exit-fees-charged-by-your-old-supplier