Possible Clues:

• Largest city in Ghana
• Capital from odd parts of Africa chap raised
• Creditor breaking into an accountant's capital
• Gulf of Guinea hub
• Creditor enters bill, beginning to affect capital
• Discharge about to be reversed? Capital!
• A double century for the artist in Africa
• From every other part of Africa, cram back into one of its capitals
• Seas are hidden by 'aze, reportedly, in this port
• African capital city reaches Atlantic, initially